diff options
| -rw-r--r-- | fs/xfs/quota/xfs_qm.c | 9 | ||||
| -rw-r--r-- | fs/xfs/xfs_bmap.c | 496 | ||||
| -rw-r--r-- | fs/xfs/xfs_bmap.h | 4 | ||||
| -rw-r--r-- | fs/xfs/xfs_bmap_btree.c | 10 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode.c | 470 | ||||
| -rw-r--r-- | fs/xfs/xfs_inode.h | 18 |
6 files changed, 597 insertions, 410 deletions
diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c index fd4abb8a32c5..1fb757ef3f41 100644 --- a/fs/xfs/quota/xfs_qm.c +++ b/fs/xfs/quota/xfs_qm.c @@ -1704,9 +1704,9 @@ xfs_qm_get_rtblks( xfs_qcnt_t *O_rtblks) { xfs_filblks_t rtblks; /* total rt blks */ + xfs_extnum_t idx; /* extent record index */ xfs_ifork_t *ifp; /* inode fork pointer */ xfs_extnum_t nextents; /* number of extent entries */ - xfs_bmbt_rec_t *base; /* base of extent array */ xfs_bmbt_rec_t *ep; /* pointer to an extent entry */ int error; @@ -1717,10 +1717,11 @@ xfs_qm_get_rtblks( return error; } rtblks = 0; - nextents = ifp->if_bytes / sizeof(xfs_bmbt_rec_t); - base = &ifp->if_u1.if_extents[0]; - for (ep = base; ep < &base[nextents]; ep++) + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + for (idx = 0; idx < nextents; idx++) { + ep = xfs_iext_get_ext(ifp, idx); rtblks += xfs_bmbt_get_blockcount(ep); + } *O_rtblks = (xfs_qcnt_t)rtblks; return 0; } diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index 70625e577c70..53c47a181f87 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -89,7 +89,7 @@ xfs_bmap_add_attrfork_local( int *flags); /* inode logging flags */ /* - * Called by xfs_bmapi to update extent list structure and the btree + * Called by xfs_bmapi to update file extent records and the btree * after allocating space (or doing a delayed allocation). */ STATIC int /* error */ @@ -97,7 +97,7 @@ xfs_bmap_add_extent( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ - xfs_bmbt_irec_t *new, /* new data to put in extent list */ + xfs_bmbt_irec_t *new, /* new data to add to file extents */ xfs_fsblock_t *first, /* pointer to firstblock variable */ xfs_bmap_free_t *flist, /* list of extents to be freed */ int *logflagsp, /* inode logging flags */ @@ -113,7 +113,7 @@ xfs_bmap_add_extent_delay_real( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ - xfs_bmbt_irec_t *new, /* new data to put in extent list */ + xfs_bmbt_irec_t *new, /* new data to add to file extents */ xfs_filblks_t *dnew, /* new delayed-alloc indirect blocks */ xfs_fsblock_t *first, /* pointer to firstblock variable */ xfs_bmap_free_t *flist, /* list of extents to be freed */ @@ -129,7 +129,7 @@ xfs_bmap_add_extent_hole_delay( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t *cur, /* if null, not a btree */ - xfs_bmbt_irec_t *new, /* new data to put in extent list */ + xfs_bmbt_irec_t *new, /* new data to add to file extents */ int *logflagsp,/* inode logging flags */ int rsvd); /* OK to allocate reserved blocks */ @@ -142,7 +142,7 @@ xfs_bmap_add_extent_hole_real( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t *cur, /* if null, not a btree */ - xfs_bmbt_irec_t *new, /* new data to put in extent list */ + xfs_bmbt_irec_t *new, /* new data to add to file extents */ int *logflagsp, /* inode logging flags */ int whichfork); /* data or attr fork */ @@ -155,7 +155,7 @@ xfs_bmap_add_extent_unwritten_real( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ - xfs_bmbt_irec_t *new, /* new data to put in extent list */ + xfs_bmbt_irec_t *new, /* new data to add to file extents */ int *logflagsp); /* inode logging flags */ /* @@ -169,7 +169,7 @@ xfs_bmap_alloc( /* * Transform a btree format file with only one leaf node, where the * extents list will fit in the inode, into an extents format file. - * Since the extent list is already in-core, all we have to do is + * Since the file extents are already in-core, all we have to do is * give up the space for the btree root and pitch the leaf block. */ STATIC int /* error */ @@ -191,7 +191,7 @@ xfs_bmap_check_extents( #endif /* - * Called by xfs_bmapi to update extent list structure and the btree + * Called by xfs_bmapi to update file extent records and the btree * after removing space (or undoing a delayed allocation). */ STATIC int /* error */ @@ -201,7 +201,7 @@ xfs_bmap_del_extent( xfs_extnum_t idx, /* extent number to update/insert */ xfs_bmap_free_t *flist, /* list of extents to be freed */ xfs_btree_cur_t *cur, /* if null, not a btree */ - xfs_bmbt_irec_t *new, /* new data to put in extent list */ + xfs_bmbt_irec_t *new, /* new data to add to file extents */ int *logflagsp,/* inode logging flags */ int whichfork, /* data or attr fork */ int rsvd); /* OK to allocate reserved blocks */ @@ -217,18 +217,6 @@ xfs_bmap_del_free( xfs_bmap_free_item_t *free); /* list item to be freed */ /* - * Remove count entries from the extents array for inode "ip", starting - * at index "idx". Copies the remaining items down over the deleted ones, - * and gives back the excess memory. - */ -STATIC void -xfs_bmap_delete_exlist( - xfs_inode_t *ip, /* incode inode pointer */ - xfs_extnum_t idx, /* starting delete index */ - xfs_extnum_t count, /* count of items to delete */ - int whichfork); /* data or attr fork */ - -/* * Convert an extents-format file into a btree-format file. * The new file will have a root block (in the inode) and a single child block. */ @@ -244,18 +232,6 @@ xfs_bmap_extents_to_btree( int whichfork); /* data or attr fork */ /* - * Insert new item(s) in the extent list for inode "ip". - * Count new items are inserted at offset idx. - */ -STATIC void -xfs_bmap_insert_exlist( - xfs_inode_t *ip, /* incore inode pointer */ - xfs_extnum_t idx, /* starting index of new items */ - xfs_extnum_t count, /* number of inserted items */ - xfs_bmbt_irec_t *new, /* items to insert */ - int whichfork); /* data or attr fork */ - -/* * Convert a local file to an extents file. * This code is sort of bogus, since the file data needs to get * logged so it won't be lost. The bmap-level manipulations are ok, though. @@ -316,7 +292,7 @@ xfs_bmap_trace_addentry( int whichfork); /* data or attr fork */ /* - * Add bmap trace entry prior to a call to xfs_bmap_delete_exlist. + * Add bmap trace entry prior to a call to xfs_iext_remove. */ STATIC void xfs_bmap_trace_delete( @@ -328,7 +304,7 @@ xfs_bmap_trace_delete( int whichfork); /* data or attr fork */ /* - * Add bmap trace entry prior to a call to xfs_bmap_insert_exlist, or + * Add bmap trace entry prior to a call to xfs_iext_insert, or * reading in the extents list from the disk (in the btree). */ STATIC void @@ -343,7 +319,7 @@ xfs_bmap_trace_insert( int whichfork); /* data or attr fork */ /* - * Add bmap trace entry after updating an extent list entry in place. + * Add bmap trace entry after updating an extent record in place. */ STATIC void xfs_bmap_trace_post_update( @@ -354,7 +330,7 @@ xfs_bmap_trace_post_update( int whichfork); /* data or attr fork */ /* - * Add bmap trace entry prior to updating an extent list entry in place. + * Add bmap trace entry prior to updating an extent record in place. */ STATIC void xfs_bmap_trace_pre_update( @@ -413,19 +389,24 @@ STATIC int xfs_bmap_count_tree( xfs_mount_t *mp, xfs_trans_t *tp, + xfs_ifork_t *ifp, xfs_fsblock_t blockno, int levelin, int *count); STATIC int xfs_bmap_count_leaves( - xfs_bmbt_rec_t *frp, + xfs_ifork_t *ifp, + xfs_extnum_t idx, int numrecs, int *count); STATIC int xfs_bmap_disk_count_leaves( - xfs_bmbt_rec_t *frp, + xfs_ifork_t *ifp, + xfs_mount_t *mp, + xfs_extnum_t idx, + xfs_bmbt_block_t *block, int numrecs, int *count); @@ -537,7 +518,7 @@ xfs_bmap_add_attrfork_local( } /* - * Called by xfs_bmapi to update extent list structure and the btree + * Called by xfs_bmapi to update file extent records and the btree * after allocating space (or doing a delayed allocation). */ STATIC int /* error */ @@ -545,7 +526,7 @@ xfs_bmap_add_extent( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ - xfs_bmbt_irec_t *new, /* new data to put in extent list */ + xfs_bmbt_irec_t *new, /* new data to add to file extents */ xfs_fsblock_t *first, /* pointer to firstblock variable */ xfs_bmap_free_t *flist, /* list of extents to be freed */ int *logflagsp, /* inode logging flags */ @@ -578,7 +559,7 @@ xfs_bmap_add_extent( if (nextents == 0) { xfs_bmap_trace_insert(fname, "insert empty", ip, 0, 1, new, NULL, whichfork); - xfs_bmap_insert_exlist(ip, 0, 1, new, whichfork); + xfs_iext_insert(ifp, 0, 1, new); ASSERT(cur == NULL); ifp->if_lastex = 0; if (!ISNULLSTARTBLOCK(new->br_startblock)) { @@ -614,7 +595,7 @@ xfs_bmap_add_extent( /* * Get the record referred to by idx. */ - xfs_bmbt_get_all(&ifp->if_u1.if_extents[idx], &prev); + xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx), &prev); /* * If it's a real allocation record, and the new allocation ends * after the start of the referred to record, then we're filling @@ -714,14 +695,13 @@ xfs_bmap_add_extent_delay_real( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ - xfs_bmbt_irec_t *new, /* new data to put in extent list */ + xfs_bmbt_irec_t *new, /* new data to add to file extents */ xfs_filblks_t *dnew, /* new delayed-alloc indirect blocks */ xfs_fsblock_t *first, /* pointer to firstblock variable */ xfs_bmap_free_t *flist, /* list of extents to be freed */ int *logflagsp, /* inode logging flags */ int rsvd) /* OK to use reserved data block allocation */ { - xfs_bmbt_rec_t *base; /* base of extent entry list */ xfs_btree_cur_t *cur; /* btree cursor */ int diff; /* temp value */ xfs_bmbt_rec_t *ep; /* extent entry for idx */ @@ -730,6 +710,7 @@ xfs_bmap_add_extent_delay_real( static char fname[] = "xfs_bmap_add_extent_delay_real"; #endif int i; /* temp state */ + xfs_ifork_t *ifp; /* inode fork pointer */ xfs_fileoff_t new_endoff; /* end offset of new entry */ xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ /* left is 0, right is 1, prev is 2 */ @@ -763,8 +744,8 @@ xfs_bmap_add_extent_delay_real( * Set up a bunch of variables to make the tests simpler. */ cur = *curp; - base = ip->i_df.if_u1.if_extents; - ep = &base[idx]; + ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); + ep = xfs_iext_get_ext(ifp, idx); xfs_bmbt_get_all(ep, &PREV); new_endoff = new->br_startoff + new->br_blockcount; ASSERT(PREV.br_startoff <= new->br_startoff); @@ -781,7 +762,7 @@ xfs_bmap_add_extent_delay_real( * Don't set contiguous if the combined extent would be too large. */ if (STATE_SET_TEST(LEFT_VALID, idx > 0)) { - xfs_bmbt_get_all(ep - 1, &LEFT); + xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx - 1), &LEFT); STATE_SET(LEFT_DELAY, ISNULLSTARTBLOCK(LEFT.br_startblock)); } STATE_SET(LEFT_CONTIG, @@ -798,7 +779,7 @@ xfs_bmap_add_extent_delay_real( if (STATE_SET_TEST(RIGHT_VALID, idx < ip->i_df.if_bytes / (uint)sizeof(xfs_bmbt_rec_t) - 1)) { - xfs_bmbt_get_all(ep + 1, &RIGHT); + xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx + 1), &RIGHT); STATE_SET(RIGHT_DELAY, ISNULLSTARTBLOCK(RIGHT.br_startblock)); } STATE_SET(RIGHT_CONTIG, @@ -825,14 +806,14 @@ xfs_bmap_add_extent_delay_real( */ xfs_bmap_trace_pre_update(fname, "LF|RF|LC|RC", ip, idx - 1, XFS_DATA_FORK); - xfs_bmbt_set_blockcount(ep - 1, + xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), LEFT.br_blockcount + PREV.br_blockcount + RIGHT.br_blockcount); xfs_bmap_trace_post_update(fname, "LF|RF|LC|RC", ip, idx - 1, XFS_DATA_FORK); xfs_bmap_trace_delete(fname, "LF|RF|LC|RC", ip, idx, 2, XFS_DATA_FORK); - xfs_bmap_delete_exlist(ip, idx, 2, XFS_DATA_FORK); + xfs_iext_remove(ifp, idx, 2); ip->i_df.if_lastex = idx - 1; ip->i_d.di_nextents--; if (cur == NULL) @@ -867,14 +848,14 @@ xfs_bmap_add_extent_delay_real( */ xfs_bmap_trace_pre_update(fname, "LF|RF|LC", ip, idx - 1, XFS_DATA_FORK); - xfs_bmbt_set_blockcount(ep - 1, + xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), LEFT.br_blockcount + PREV.br_blockcount); xfs_bmap_trace_post_update(fname, "LF|RF|LC", ip, idx - 1, XFS_DATA_FORK); ip->i_df.if_lastex = idx - 1; xfs_bmap_trace_delete(fname, "LF|RF|LC", ip, idx, 1, XFS_DATA_FORK); - xfs_bmap_delete_exlist(ip, idx, 1, XFS_DATA_FORK); + xfs_iext_remove(ifp, idx, 1); if (cur == NULL) rval = XFS_ILOG_DEXT; else { @@ -908,7 +889,7 @@ xfs_bmap_add_extent_delay_real( ip->i_df.if_lastex = idx; xfs_bmap_trace_delete(fname, "LF|RF|RC", ip, idx + 1, 1, XFS_DATA_FORK); - xfs_bmap_delete_exlist(ip, idx + 1, 1, XFS_DATA_FORK); + xfs_iext_remove(ifp, idx + 1, 1); if (cur == NULL) rval = XFS_ILOG_DEXT; else { @@ -964,7 +945,7 @@ xfs_bmap_add_extent_delay_real( */ xfs_bmap_trace_pre_update(fname, "LF|LC", ip, idx - 1, XFS_DATA_FORK); - xfs_bmbt_set_blockcount(ep - 1, + xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), LEFT.br_blockcount + new->br_blockcount); xfs_bmbt_set_startoff(ep, PREV.br_startoff + new->br_blockcount); @@ -1010,7 +991,7 @@ xfs_bmap_add_extent_delay_real( xfs_bmbt_set_blockcount(ep, temp); xfs_bmap_trace_insert(fname, "LF", ip, idx, 1, new, NULL, XFS_DATA_FORK); - xfs_bmap_insert_exlist(ip, idx, 1, new, XFS_DATA_FORK); + xfs_iext_insert(ifp, idx, 1, new); ip->i_df.if_lastex = idx; ip->i_d.di_nextents++; if (cur == NULL) @@ -1039,8 +1020,7 @@ xfs_bmap_add_extent_delay_real( temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), STARTBLOCKVAL(PREV.br_startblock) - (cur ? cur->bc_private.b.allocated : 0)); - base = ip->i_df.if_u1.if_extents; - ep = &base[idx + 1]; + ep = xfs_iext_get_ext(ifp, idx + 1); xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); xfs_bmap_trace_post_update(fname, "LF", ip, idx + 1, XFS_DATA_FORK); @@ -1058,7 +1038,8 @@ xfs_bmap_add_extent_delay_real( xfs_bmap_trace_pre_update(fname, "RF|RC", ip, idx + 1, XFS_DATA_FORK); xfs_bmbt_set_blockcount(ep, temp); - xfs_bmbt_set_allf(ep + 1, new->br_startoff, new->br_startblock, + xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, idx + 1), + new->br_startoff, new->br_startblock, new->br_blockcount + RIGHT.br_blockcount, RIGHT.br_state); xfs_bmap_trace_post_update(fname, "RF|RC", ip, idx + 1, @@ -1098,7 +1079,7 @@ xfs_bmap_add_extent_delay_real( xfs_bmbt_set_blockcount(ep, temp); xfs_bmap_trace_insert(fname, "RF", ip, idx + 1, 1, new, NULL, XFS_DATA_FORK); - xfs_bmap_insert_exlist(ip, idx + 1, 1, new, XFS_DATA_FORK); + xfs_iext_insert(ifp, idx + 1, 1, new); ip->i_df.if_lastex = idx + 1; ip->i_d.di_nextents++; if (cur == NULL) @@ -1127,8 +1108,7 @@ xfs_bmap_add_extent_delay_real( temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), STARTBLOCKVAL(PREV.br_startblock) - (cur ? cur->bc_private.b.allocated : 0)); - base = ip->i_df.if_u1.if_extents; - ep = &base[idx]; + ep = xfs_iext_get_ext(ifp, idx); xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); xfs_bmap_trace_post_update(fname, "RF", ip, idx, XFS_DATA_FORK); *dnew = temp; @@ -1149,7 +1129,7 @@ xfs_bmap_add_extent_delay_real( r[1].br_blockcount = temp2; xfs_bmap_trace_insert(fname, "0", ip, idx + 1, 2, &r[0], &r[1], XFS_DATA_FORK); - xfs_bmap_insert_exlist(ip, idx + 1, 2, &r[0], XFS_DATA_FORK); + xfs_iext_insert(ifp, idx + 1, 2, &r[0]); ip->i_df.if_lastex = idx + 1; ip->i_d.di_nextents++; if (cur == NULL) @@ -1204,13 +1184,13 @@ xfs_bmap_add_extent_delay_real( } } } - base = ip->i_df.if_u1.if_extents; - ep = &base[idx]; + ep = xfs_iext_get_ext(ifp, idx); xfs_bmbt_set_startblock(ep, NULLSTARTBLOCK((int)temp)); xfs_bmap_trace_post_update(fname, "0", ip, idx, XFS_DATA_FORK); xfs_bmap_trace_pre_update(fname, "0", ip, idx + 2, XFS_DATA_FORK); - xfs_bmbt_set_startblock(ep + 2, NULLSTARTBLOCK((int)temp2)); + xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, idx + 2), + NULLSTARTBLOCK((int)temp2)); xfs_bmap_trace_post_update(fname, "0", ip, idx + 2, XFS_DATA_FORK); *dnew = temp + temp2; @@ -1254,10 +1234,9 @@ xfs_bmap_add_extent_unwritten_real( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ - xfs_bmbt_irec_t *new, /* new data to put in extent list */ + xfs_bmbt_irec_t *new, /* new data to add to file extents */ int *logflagsp) /* inode logging flags */ { - xfs_bmbt_rec_t *base; /* base of extent entry list */ xfs_btree_cur_t *cur; /* btree cursor */ xfs_bmbt_rec_t *ep; /* extent entry for idx */ int error; /* error return value */ @@ -1265,6 +1244,7 @@ xfs_bmap_add_extent_unwritten_real( static char fname[] = "xfs_bmap_add_extent_unwritten_real"; #endif int i; /* temp state */ + xfs_ifork_t *ifp; /* inode fork pointer */ xfs_fileoff_t new_endoff; /* end offset of new entry */ xfs_exntst_t newext; /* new extent state */ xfs_exntst_t oldext; /* old extent state */ @@ -1298,8 +1278,8 @@ xfs_bmap_add_extent_unwritten_real( */ error = 0; cur = *curp; - base = ip->i_df.if_u1.if_extents; - ep = &base[idx]; + ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); + ep = xfs_iext_get_ext(ifp, idx); xfs_bmbt_get_all(ep, &PREV); newext = new->br_state; oldext = (newext == XFS_EXT_UNWRITTEN) ? @@ -1320,7 +1300,7 @@ xfs_bmap_add_extent_unwritten_real( * Don't set contiguous if the combined extent would be too large. */ if (STATE_SET_TEST(LEFT_VALID, idx > 0)) { - xfs_bmbt_get_all(ep - 1, &LEFT); + xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx - 1), &LEFT); STATE_SET(LEFT_DELAY, ISNULLSTARTBLOCK(LEFT.br_startblock)); } STATE_SET(LEFT_CONTIG, @@ -1337,7 +1317,7 @@ xfs_bmap_add_extent_unwritten_real( if (STATE_SET_TEST(RIGHT_VALID, idx < ip->i_df.if_bytes / (uint)sizeof(xfs_bmbt_rec_t) - 1)) { - xfs_bmbt_get_all(ep + 1, &RIGHT); + xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx + 1), &RIGHT); STATE_SET(RIGHT_DELAY, ISNULLSTARTBLOCK(RIGHT.br_startblock)); } STATE_SET(RIGHT_CONTIG, @@ -1363,14 +1343,14 @@ xfs_bmap_add_extent_unwritten_real( */ xfs_bmap_trace_pre_update(fname, "LF|RF|LC|RC", ip, idx - 1, XFS_DATA_FORK); - xfs_bmbt_set_blockcount(ep - 1, + xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), LEFT.br_blockcount + PREV.br_blockcount + RIGHT.br_blockcount); xfs_bmap_trace_post_update(fname, "LF|RF|LC|RC", ip, idx - 1, XFS_DATA_FORK); xfs_bmap_trace_delete(fname, "LF|RF|LC|RC", ip, idx, 2, XFS_DATA_FORK); - xfs_bmap_delete_exlist(ip, idx, 2, XFS_DATA_FORK); + xfs_iext_remove(ifp, idx, 2); ip->i_df.if_lastex = idx - 1; ip->i_d.di_nextents -= 2; if (cur == NULL) @@ -1409,14 +1389,14 @@ xfs_bmap_add_extent_unwritten_real( */ xfs_bmap_trace_pre_update(fname, "LF|RF|LC", ip, idx - 1, XFS_DATA_FORK); - xfs_bmbt_set_blockcount(ep - 1, + xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), LEFT.br_blockcount + PREV.br_blockcount); xfs_bmap_trace_post_update(fname, "LF|RF|LC", ip, idx - 1, XFS_DATA_FORK); ip->i_df.if_lastex = idx - 1; xfs_bmap_trace_delete(fname, "LF|RF|LC", ip, idx, 1, XFS_DATA_FORK); - xfs_bmap_delete_exlist(ip, idx, 1, XFS_DATA_FORK); + xfs_iext_remove(ifp, idx, 1); ip->i_d.di_nextents--; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; @@ -1456,7 +1436,7 @@ xfs_bmap_add_extent_unwritten_real( ip->i_df.if_lastex = idx; xfs_bmap_trace_delete(fname, "LF|RF|RC", ip, idx + 1, 1, XFS_DATA_FORK); - xfs_bmap_delete_exlist(ip, idx + 1, 1, XFS_DATA_FORK); + xfs_iext_remove(ifp, idx + 1, 1); ip->i_d.di_nextents--; if (cur == NULL) rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; @@ -1516,7 +1496,7 @@ xfs_bmap_add_extent_unwritten_real( */ xfs_bmap_trace_pre_update(fname, "LF|LC", ip, idx - 1, XFS_DATA_FORK); - xfs_bmbt_set_blockcount(ep - 1, + xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), LEFT.br_blockcount + new->br_blockcount); xfs_bmbt_set_startoff(ep, PREV.br_startoff + new->br_blockcount); @@ -1571,7 +1551,7 @@ xfs_bmap_add_extent_unwritten_real( xfs_bmap_trace_post_update(fname, "LF", ip, idx, XFS_DATA_FORK); xfs_bmap_trace_insert(fname, "LF", ip, idx, 1, new, NULL, XFS_DATA_FORK); - xfs_bmap_insert_exlist(ip, idx, 1, new, XFS_DATA_FORK); + xfs_iext_insert(ifp, idx, 1, new); ip->i_df.if_lastex = idx; ip->i_d.di_nextents++; if (cur == NULL) @@ -1609,7 +1589,8 @@ xfs_bmap_add_extent_unwritten_real( PREV.br_blockcount - new->br_blockcount); xfs_bmap_trace_post_update(fname, "RF|RC", ip, idx, XFS_DATA_FORK); - xfs_bmbt_set_allf(ep + 1, new->br_startoff, new->br_startblock, + xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, idx + 1), + new->br_startoff, new->br_startblock, new->br_blockcount + RIGHT.br_blockcount, newext); xfs_bmap_trace_post_update(fname, "RF|RC", ip, idx + 1, XFS_DATA_FORK); @@ -1649,7 +1630,7 @@ xfs_bmap_add_extent_unwritten_real( xfs_bmap_trace_post_update(fname, "RF", ip, idx, XFS_DATA_FORK); xfs_bmap_trace_insert(fname, "RF", ip, idx + 1, 1, new, NULL, XFS_DATA_FORK); - xfs_bmap_insert_exlist(ip, idx + 1, 1, new, XFS_DATA_FORK); + xfs_iext_insert(ifp, idx + 1, 1, new); ip->i_df.if_lastex = idx + 1; ip->i_d.di_nextents++; if (cur == NULL) @@ -1696,7 +1677,7 @@ xfs_bmap_add_extent_unwritten_real( r[1].br_state = oldext; xfs_bmap_trace_insert(fname, "0", ip, idx + 1, 2, &r[0], &r[1], XFS_DATA_FORK); - xfs_bmap_insert_exlist(ip, idx + 1, 2, &r[0], XFS_DATA_FORK); + xfs_iext_insert(ifp, idx + 1, 2, &r[0]); ip->i_df.if_lastex = idx + 1; ip->i_d.di_nextents += 2; if (cur == NULL) @@ -1770,15 +1751,15 @@ xfs_bmap_add_extent_hole_delay( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t *cur, /* if null, not a btree */ - xfs_bmbt_irec_t *new, /* new data to put in extent list */ + xfs_bmbt_irec_t *new, /* new data to add to file extents */ int *logflagsp, /* inode logging flags */ int rsvd) /* OK to allocate reserved blocks */ { - xfs_bmbt_rec_t *base; /* base of extent entry list */ - xfs_bmbt_rec_t *ep; /* extent list entry for idx */ + xfs_bmbt_rec_t *ep; /* extent record for idx */ #ifdef XFS_BMAP_TRACE static char fname[] = "xfs_bmap_add_extent_hole_delay"; #endif + xfs_ifork_t *ifp; /* inode fork pointer */ xfs_bmbt_irec_t left; /* left neighbor extent entry */ xfs_filblks_t newlen=0; /* new indirect size */ xfs_filblks_t oldlen=0; /* old indirect size */ @@ -1799,15 +1780,15 @@ xfs_bmap_add_extent_hole_delay( ((state &= ~MASK(b)), 0)) #define SWITCH_STATE (state & MASK2(LEFT_CONTIG, RIGHT_CONTIG)) - base = ip->i_df.if_u1.if_extents; - ep = &base[idx]; + ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); + ep = xfs_iext_get_ext(ifp, idx); state = 0; ASSERT(ISNULLSTARTBLOCK(new->br_startblock)); /* * Check and set flags if this segment has a left neighbor */ if (STATE_SET_TEST(LEFT_VALID, idx > 0)) { - xfs_bmbt_get_all(ep - 1, &left); + xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx - 1), &left); STATE_SET(LEFT_DELAY, ISNULLSTARTBLOCK(left.br_startblock)); } /* @@ -1844,23 +1825,24 @@ xfs_bmap_add_extent_hole_delay( /* * New allocation is contiguous with delayed allocations * on the left and on the right. - * Merge all three into a single extent list entry. + * Merge all three into a single extent record. */ temp = left.br_blockcount + new->br_blockcount + right.br_blockcount; xfs_bmap_trace_pre_update(fname, "LC|RC", ip, idx - 1, XFS_DATA_FORK); - xfs_bmbt_set_blockcount(ep - 1, temp); + xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), temp); oldlen = STARTBLOCKVAL(left.br_startblock) + STARTBLOCKVAL(new->br_startblock) + STARTBLOCKVAL(right.br_startblock); newlen = xfs_bmap_worst_indlen(ip, temp); - xfs_bmbt_set_startblock(ep - 1, NULLSTARTBLOCK((int)newlen)); + xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, idx - 1), + NULLSTARTBLOCK((int)newlen)); xfs_bmap_trace_post_update(fname, "LC|RC", ip, idx - 1, XFS_DATA_FORK); xfs_bmap_trace_delete(fname, "LC|RC", ip, idx, 1, XFS_DATA_FORK); - xfs_bmap_delete_exlist(ip, idx, 1, XFS_DATA_FORK); + xfs_iext_remove(ifp, idx, 1); ip->i_df.if_lastex = idx - 1; break; @@ -1873,11 +1855,12 @@ xfs_bmap_add_extent_hole_delay( temp = left.br_blockcount + new->br_blockcount; xfs_bmap_trace_pre_update(fname, "LC", ip, idx - 1, XFS_DATA_FORK); - xfs_bmbt_set_blockcount(ep - 1, temp); + xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), temp); oldlen = STARTBLOCKVAL(left.br_startblock) + STARTBLOCKVAL(new->br_startblock); newlen = xfs_bmap_worst_indlen(ip, temp); - xfs_bmbt_set_startblock(ep - 1, NULLSTARTBLOCK((int)newlen)); + xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, idx - 1), + NULLSTARTBLOCK((int)newlen)); xfs_bmap_trace_post_update(fname, "LC", ip, idx - 1, XFS_DATA_FORK); ip->i_df.if_lastex = idx - 1; @@ -1909,7 +1892,7 @@ xfs_bmap_add_extent_hole_delay( oldlen = newlen = 0; xfs_bmap_trace_insert(fname, "0", ip, idx, 1, new, NULL, XFS_DATA_FORK); - xfs_bmap_insert_exlist(ip, idx, 1, new, XFS_DATA_FORK); + xfs_iext_insert(ifp, idx, 1, new); ip->i_df.if_lastex = idx; break; } @@ -1940,7 +1923,7 @@ xfs_bmap_add_extent_hole_real( xfs_inode_t *ip, /* incore inode pointer */ xfs_extnum_t idx, /* extent number to update/insert */ xfs_btree_cur_t *cur, /* if null, not a btree */ - xfs_bmbt_irec_t *new, /* new data to put in extent list */ + xfs_bmbt_irec_t *new, /* new data to add to file extents */ int *logflagsp, /* inode logging flags */ int whichfork) /* data or attr fork */ { @@ -1970,13 +1953,13 @@ xfs_bmap_add_extent_hole_real( ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(idx <= ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t)); - ep = &ifp->if_u1.if_extents[idx]; + ep = xfs_iext_get_ext(ifp, idx); state = 0; /* * Check and set flags if this segment has a left neighbor. */ if (STATE_SET_TEST(LEFT_VALID, idx > 0)) { - xfs_bmbt_get_all(ep - 1, &left); + xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx - 1), &left); STATE_SET(LEFT_DELAY, ISNULLSTARTBLOCK(left.br_startblock)); } /* @@ -2019,18 +2002,18 @@ xfs_bmap_add_extent_hole_real( /* * New allocation is contiguous with real allocations on the * left and on the right. - * Merge all three into a single extent list entry. + * Merge all three into a single extent record. */ xfs_bmap_trace_pre_update(fname, "LC|RC", ip, idx - 1, whichfork); - xfs_bmbt_set_blockcount(ep - 1, + xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), left.br_blockcount + new->br_blockcount + right.br_blockcount); xfs_bmap_trace_post_update(fname, "LC|RC", ip, idx - 1, whichfork); xfs_bmap_trace_delete(fname, "LC|RC", ip, idx, 1, whichfork); - xfs_bmap_delete_exlist(ip, idx, 1, whichfork); + xfs_iext_remove(ifp, idx, 1); ifp->if_lastex = idx - 1; XFS_IFORK_NEXT_SET(ip, whichfork, XFS_IFORK_NEXTENTS(ip, whichfork) - 1); @@ -2062,7 +2045,7 @@ xfs_bmap_add_extent_hole_real( * Merge the new allocation with the left neighbor. */ xfs_bmap_trace_pre_update(fname, "LC", ip, idx - 1, whichfork); - xfs_bmbt_set_blockcount(ep - 1, + xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, idx - 1), left.br_blockcount + new->br_blockcount); xfs_bmap_trace_post_update(fname, "LC", ip, idx - 1, whichfork); ifp->if_lastex = idx - 1; @@ -2116,7 +2099,7 @@ xfs_bmap_add_extent_hole_real( */ xfs_bmap_trace_insert(fname, "0", ip, idx, 1, new, NULL, whichfork); - xfs_bmap_insert_exlist(ip, idx, 1, new, whichfork); + xfs_iext_insert(ifp, idx, 1, new); ifp->if_lastex = idx; XFS_IFORK_NEXT_SET(ip, whichfork, XFS_IFORK_NEXTENTS(ip, whichfork) + 1); @@ -2811,7 +2794,7 @@ xfs_bmap_alloc( /* * Transform a btree format file with only one leaf node, where the * extents list will fit in the inode, into an extents format file. - * Since the extent list is already in-core, all we have to do is + * Since the file extents are already in-core, all we have to do is * give up the space for the btree root and pitch the leaf block. */ STATIC int /* error */ @@ -2868,7 +2851,7 @@ xfs_bmap_btree_to_extents( } /* - * Called by xfs_bmapi to update extent list structure and the btree + * Called by xfs_bmapi to update file extent records and the btree * after removing space (or undoing a delayed allocation). */ STATIC int /* error */ @@ -2878,7 +2861,7 @@ xfs_bmap_del_extent( xfs_extnum_t idx, /* extent number to update/delete */ xfs_bmap_free_t *flist, /* list of extents to be freed */ xfs_btree_cur_t *cur, /* if null, not a btree */ - xfs_bmbt_irec_t *del, /* data to remove from extent list */ + xfs_bmbt_irec_t *del, /* data to remove from extents */ int *logflagsp, /* inode logging flags */ int whichfork, /* data or attr fork */ int rsvd) /* OK to allocate reserved blocks */ @@ -2903,7 +2886,6 @@ xfs_bmap_del_extent( xfs_filblks_t nblks; /* quota/sb block count */ xfs_bmbt_irec_t new; /* new record to be inserted */ /* REFERENCED */ - xfs_extnum_t nextents; /* number of extents in list */ uint qfield; /* quota field to update */ xfs_filblks_t temp; /* for indirect length calculations */ xfs_filblks_t temp2; /* for indirect length calculations */ @@ -2911,10 +2893,10 @@ xfs_bmap_del_extent( XFS_STATS_INC(xs_del_exlist); mp = ip->i_mount; ifp = XFS_IFORK_PTR(ip, whichfork); - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - ASSERT(idx >= 0 && idx < nextents); + ASSERT((idx >= 0) && (idx < ifp->if_bytes / + (uint)sizeof(xfs_bmbt_rec_t))); ASSERT(del->br_blockcount > 0); - ep = &ifp->if_u1.if_extents[idx]; + ep = xfs_iext_get_ext(ifp, idx); xfs_bmbt_get_all(ep, &got); ASSERT(got.br_startoff <= del->br_startoff); del_endoff = del->br_startoff + del->br_blockcount; @@ -2990,7 +2972,7 @@ xfs_bmap_del_extent( * Matches the whole extent. Delete the entry. */ xfs_bmap_trace_delete(fname, "3", ip, idx, 1, whichfork); - xfs_bmap_delete_exlist(ip, idx, 1, whichfork); + xfs_iext_remove(ifp, idx, 1); ifp->if_lastex = idx; if (delay) break; @@ -3160,7 +3142,7 @@ xfs_bmap_del_extent( xfs_bmap_trace_post_update(fname, "0", ip, idx, whichfork); xfs_bmap_trace_insert(fname, "0", ip, idx + 1, 1, &new, NULL, whichfork); - xfs_bmap_insert_exlist(ip, idx + 1, 1, &new, whichfork); + xfs_iext_insert(ifp, idx + 1, 1, &new); ifp->if_lastex = idx + 1; break; } @@ -3213,31 +3195,6 @@ xfs_bmap_del_free( } /* - * Remove count entries from the extents array for inode "ip", starting - * at index "idx". Copies the remaining items down over the deleted ones, - * and gives back the excess memory. - */ -STATIC void -xfs_bmap_delete_exlist( - xfs_inode_t *ip, /* incore inode pointer */ - xfs_extnum_t idx, /* starting delete index */ - xfs_extnum_t count, /* count of items to delete */ - int whichfork) /* data or attr fork */ -{ - xfs_bmbt_rec_t *base; /* base of extent list */ - xfs_ifork_t *ifp; /* inode fork pointer */ - xfs_extnum_t nextents; /* number of extents in list after */ - - ifp = XFS_IFORK_PTR(ip, whichfork); - ASSERT(ifp->if_flags & XFS_IFEXTENTS); - base = ifp->if_u1.if_extents; - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t) - count; - memmove(&base[idx], &base[idx + count], - (nextents - idx) * sizeof(*base)); - xfs_iext_realloc(ip, -count, whichfork); -} - -/* * Convert an extents-format file into a btree-format file. * The new file will have a root block (in the inode) and a single child block. */ @@ -3258,13 +3215,13 @@ xfs_bmap_extents_to_btree( xfs_bmbt_rec_t *arp; /* child record pointer */ xfs_bmbt_block_t *block; /* btree root block */ xfs_btree_cur_t *cur; /* bmap btree cursor */ - xfs_bmbt_rec_t *ep; /* extent list pointer */ + xfs_bmbt_rec_t *ep; /* extent record pointer */ int error; /* error return value */ - xfs_extnum_t i, cnt; /* extent list index */ + xfs_extnum_t i, cnt; /* extent record index */ xfs_ifork_t *ifp; /* inode fork pointer */ xfs_bmbt_key_t *kp; /* root block key pointer */ xfs_mount_t *mp; /* mount structure */ - xfs_extnum_t nextents; /* extent list size */ + xfs_extnum_t nextents; /* number of file extents */ xfs_bmbt_ptr_t *pp; /* root block address pointer */ ifp = XFS_IFORK_PTR(ip, whichfork); @@ -3343,7 +3300,8 @@ xfs_bmap_extents_to_btree( ablock->bb_rightsib = cpu_to_be64(NULLDFSBNO); arp = XFS_BMAP_REC_IADDR(ablock, 1, cur); nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - for (ep = ifp->if_u1.if_extents, cnt = i = 0; i < nextents; i++, ep++) { + for (cnt = i = 0; i < nextents; i++) { + ep = xfs_iext_get_ext(ifp, i); if (!ISNULLSTARTBLOCK(xfs_bmbt_get_startblock(ep))) { arp->l0 = INT_GET(ep->l0, ARCH_CONVERT); arp->l1 = INT_GET(ep->l1, ARCH_CONVERT); @@ -3373,34 +3331,6 @@ xfs_bmap_extents_to_btree( } /* - * Insert new item(s) in the extent list for inode "ip". - * Count new items are inserted at offset idx. - */ -STATIC void -xfs_bmap_insert_exlist( - xfs_inode_t *ip, /* incore inode pointer */ - xfs_extnum_t idx, /* starting index of new items */ - xfs_extnum_t count, /* number of inserted items */ - xfs_bmbt_irec_t *new, /* items to insert */ - int whichfork) /* data or attr fork */ -{ - xfs_bmbt_rec_t *base; /* extent list base */ - xfs_ifork_t *ifp; /* inode fork pointer */ - xfs_extnum_t nextents; /* extent list size */ - xfs_extnum_t to; /* extent list index */ - - ifp = XFS_IFORK_PTR(ip, whichfork); - ASSERT(ifp->if_flags & XFS_IFEXTENTS); - xfs_iext_realloc(ip, count, whichfork); - base = ifp->if_u1.if_extents; - nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - memmove(&base[idx + count], &base[idx], - (nextents - (idx + count)) * sizeof(*base)); - for (to = idx; to < idx + count; to++, new++) - xfs_bmbt_set_all(&base[to], new); -} - -/* * Helper routine to reset inode di_forkoff field when switching * attribute fork from local to extent format - we reset it where * possible to make space available for inline data fork extents. @@ -3457,8 +3387,8 @@ xfs_bmap_local_to_extents( error = 0; if (ifp->if_bytes) { xfs_alloc_arg_t args; /* allocation arguments */ - xfs_buf_t *bp; /* buffer for extent list block */ - xfs_bmbt_rec_t *ep; /* extent list pointer */ + xfs_buf_t *bp; /* buffer for extent block */ + xfs_bmbt_rec_t *ep; /* extent record pointer */ args.tp = tp; args.mp = ip->i_mount; @@ -3492,8 +3422,8 @@ xfs_bmap_local_to_extents( xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1); xfs_bmap_forkoff_reset(args.mp, ip, whichfork); xfs_idata_realloc(ip, -ifp->if_bytes, whichfork); - xfs_iext_realloc(ip, 1, whichfork); - ep = ifp->if_u1.if_extents; + xfs_iext_add(ifp, 0, 1); + ep = xfs_iext_get_ext(ifp, 0); xfs_bmbt_set_allf(ep, 0, args.fsbno, 1, XFS_EXT_NORM); xfs_bmap_trace_post_update(fname, "new", ip, 0, whichfork); XFS_IFORK_NEXT_SET(ip, whichfork, 1); @@ -3518,7 +3448,7 @@ xfs_bmbt_rec_t * /* pointer to found extent entry */ xfs_bmap_do_search_extents( xfs_bmbt_rec_t *base, /* base of extent list */ xfs_extnum_t lastx, /* last extent index used */ - xfs_extnum_t nextents, /* extent list size */ + xfs_extnum_t nextents, /* number of file extents */ xfs_fileoff_t bno, /* block number searched for */ int *eofp, /* out: end of file found */ xfs_extnum_t *lastxp, /* out: last extent index */ @@ -3569,9 +3499,9 @@ xfs_bmap_do_search_extents( got.br_blockcount = xfs_bmbt_get_blockcount(ep); *eofp = 0; } else { - /* binary search the extents array */ low = 0; high = nextents - 1; + /* binary search the extents array */ while (low <= high) { XFS_STATS_INC(xs_cmp_exlist); lastx = (low + high) >> 1; @@ -3641,8 +3571,8 @@ xfs_bmap_search_extents( xfs_ifork_t *ifp; /* inode fork pointer */ xfs_bmbt_rec_t *base; /* base of extent list */ xfs_extnum_t lastx; /* last extent index used */ - xfs_extnum_t nextents; /* extent list size */ - xfs_bmbt_rec_t *ep; /* extent list entry pointer */ + xfs_extnum_t nextents; /* number of file extents */ + xfs_bmbt_rec_t *ep; /* extent record pointer */ int rt; /* realtime flag */ XFS_STATS_INC(xs_look_exlist); @@ -3732,7 +3662,7 @@ xfs_bmap_trace_addentry( } /* - * Add bmap trace entry prior to a call to xfs_bmap_delete_exlist. + * Add bmap trace entry prior to a call to xfs_iext_remove. */ STATIC void xfs_bmap_trace_delete( @@ -3747,13 +3677,13 @@ xfs_bmap_trace_delete( ifp = XFS_IFORK_PTR(ip, whichfork); xfs_bmap_trace_addentry(XFS_BMAP_KTRACE_DELETE, fname, desc, ip, idx, - cnt, &ifp->if_u1.if_extents[idx], - cnt == 2 ? &ifp->if_u1.if_extents[idx + 1] : NULL, + cnt, xfs_iext_get_ext(ifp, idx), + cnt == 2 ? xfs_iext_get_ext(ifp, idx + 1) : NULL, whichfork); } /* - * Add bmap trace entry prior to a call to xfs_bmap_insert_exlist, or + * Add bmap trace entry prior to a call to xfs_iext_insert, or * reading in the extents list from the disk (in the btree). */ STATIC void @@ -3783,7 +3713,7 @@ xfs_bmap_trace_insert( } /* - * Add bmap trace entry after updating an extent list entry in place. + * Add bmap trace entry after updating an extent record in place. */ STATIC void xfs_bmap_trace_post_update( @@ -3797,11 +3727,11 @@ xfs_bmap_trace_post_update( ifp = XFS_IFORK_PTR(ip, whichfork); xfs_bmap_trace_addentry(XFS_BMAP_KTRACE_POST_UP, fname, desc, ip, idx, - 1, &ifp->if_u1.if_extents[idx], NULL, whichfork); + 1, xfs_iext_get_ext(ifp, idx), NULL, whichfork); } /* - * Add bmap trace entry prior to updating an extent list entry in place. + * Add bmap trace entry prior to updating an extent record in place. */ STATIC void xfs_bmap_trace_pre_update( @@ -3815,7 +3745,7 @@ xfs_bmap_trace_pre_update( ifp = XFS_IFORK_PTR(ip, whichfork); xfs_bmap_trace_addentry(XFS_BMAP_KTRACE_PRE_UP, fname, desc, ip, idx, 1, - &ifp->if_u1.if_extents[idx], NULL, whichfork); + xfs_iext_get_ext(ifp, idx), NULL, whichfork); } #endif /* XFS_BMAP_TRACE */ @@ -3892,7 +3822,7 @@ xfs_bmap_add_attrfork( int rsvd) /* xact may use reserved blks */ { xfs_fsblock_t firstblock; /* 1st block/ag allocated */ - xfs_bmap_free_t flist; /* freed extent list */ + xfs_bmap_free_t flist; /* freed extent records */ xfs_mount_t *mp; /* mount structure */ xfs_trans_t *tp; /* transaction pointer */ unsigned long s; /* spinlock spl value */ @@ -4146,7 +4076,7 @@ xfs_bmap_finish( xfs_efd_log_item_t *efd; /* extent free data */ xfs_efi_log_item_t *efi; /* extent free intention */ int error; /* error return value */ - xfs_bmap_free_item_t *free; /* free extent list item */ + xfs_bmap_free_item_t *free; /* free extent item */ unsigned int logres; /* new log reservation */ unsigned int logcount; /* new log count */ xfs_mount_t *mp; /* filesystem mount structure */ @@ -4242,9 +4172,9 @@ xfs_bmap_first_unused( xfs_fileoff_t *first_unused, /* unused block */ int whichfork) /* data or attr fork */ { - xfs_bmbt_rec_t *base; /* base of extent array */ xfs_bmbt_rec_t *ep; /* pointer to an extent entry */ int error; /* error return value */ + int idx; /* extent record index */ xfs_ifork_t *ifp; /* inode fork pointer */ xfs_fileoff_t lastaddr; /* last block number seen */ xfs_fileoff_t lowest; /* lowest useful block */ @@ -4265,10 +4195,8 @@ xfs_bmap_first_unused( return error; lowest = *first_unused; nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - base = &ifp->if_u1.if_extents[0]; - for (lastaddr = 0, max = lowest, ep = base; - ep < &base[nextents]; - ep++) { + for (idx = 0, lastaddr = 0, max = lowest; idx < nextents; idx++) { + ep = xfs_iext_get_ext(ifp, idx); off = xfs_bmbt_get_startoff(ep); /* * See if the hole before this extent will work. @@ -4287,8 +4215,8 @@ xfs_bmap_first_unused( /* * Returns the file-relative block number of the last block + 1 before * last_block (input value) in the file. - * This is not based on i_size, it is based on the extent list. - * Returns 0 for local files, as they do not have an extent list. + * This is not based on i_size, it is based on the extent records. + * Returns 0 for local files, as they do not have extent records. */ int /* error */ xfs_bmap_last_before( @@ -4335,8 +4263,8 @@ xfs_bmap_last_before( /* * Returns the file-relative block number of the first block past eof in - * the file. This is not based on i_size, it is based on the extent list. - * Returns 0 for local files, as they do not have an extent list. + * the file. This is not based on i_size, it is based on the extent records. + * Returns 0 for local files, as they do not have extent records. */ int /* error */ xfs_bmap_last_offset( @@ -4345,7 +4273,6 @@ xfs_bmap_last_offset( xfs_fileoff_t *last_block, /* last block */ int whichfork) /* data or attr fork */ { - xfs_bmbt_rec_t *base; /* base of extent array */ xfs_bmbt_rec_t *ep; /* pointer to last extent */ int error; /* error return value */ xfs_ifork_t *ifp; /* inode fork pointer */ @@ -4368,9 +4295,7 @@ xfs_bmap_last_offset( *last_block = 0; return 0; } - base = &ifp->if_u1.if_extents[0]; - ASSERT(base != NULL); - ep = &base[nextents - 1]; + ep = xfs_iext_get_ext(ifp, nextents - 1); *last_block = xfs_bmbt_get_startoff(ep) + xfs_bmbt_get_blockcount(ep); return 0; } @@ -4400,7 +4325,7 @@ xfs_bmap_one_block( return 0; ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(ifp->if_flags & XFS_IFEXTENTS); - ep = ifp->if_u1.if_extents; + ep = xfs_iext_get_ext(ifp, 0); xfs_bmbt_get_all(ep, &s); rval = s.br_startoff == 0 && s.br_blockcount == 1; if (rval && whichfork == XFS_DATA_FORK) @@ -4435,7 +4360,6 @@ xfs_bmap_read_extents( xfs_bmbt_ptr_t *pp; /* pointer to block address */ /* REFERENCED */ xfs_extnum_t room; /* number of entries there's room for */ - xfs_bmbt_rec_t *trp; /* target record pointer */ bno = NULLFSBLOCK; mp = ip->i_mount; @@ -4478,16 +4402,16 @@ xfs_bmap_read_extents( /* * Here with bp and block set to the leftmost leaf node in the tree. */ - room = ifp->if_bytes / (uint)sizeof(*trp); - trp = ifp->if_u1.if_extents; + room = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); i = 0; /* - * Loop over all leaf nodes. Copy information to the extent list. + * Loop over all leaf nodes. Copy information to the extent records. */ for (;;) { - xfs_bmbt_rec_t *frp, *temp; + xfs_bmbt_rec_t *frp, *trp; xfs_fsblock_t nextbno; xfs_extnum_t num_recs; + xfs_extnum_t start; num_recs = be16_to_cpu(block->bb_numrecs); @@ -4511,12 +4435,13 @@ xfs_bmap_read_extents( if (nextbno != NULLFSBLOCK) xfs_btree_reada_bufl(mp, nextbno, 1); /* - * Copy records into the extent list. + * Copy records into the extent records. */ frp = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_bmbt, block, 1, mp->m_bmap_dmxr[0]); - temp = trp; - for (j = 0; j < num_recs; j++, frp++, trp++) { + start = i; + for (j = 0; j < num_recs; j++, i++, frp++) { + trp = xfs_iext_get_ext(ifp, i); trp->l0 = INT_GET(frp->l0, ARCH_CONVERT); trp->l1 = INT_GET(frp->l1, ARCH_CONVERT); } @@ -4526,14 +4451,14 @@ xfs_bmap_read_extents( * any "older" data bmap btree records for a * set bit in the "extent flag" position. */ - if (unlikely(xfs_check_nostate_extents(temp, num_recs))) { + if (unlikely(xfs_check_nostate_extents(ifp, + start, num_recs))) { XFS_ERROR_REPORT("xfs_bmap_read_extents(2)", XFS_ERRLEVEL_LOW, ip->i_mount); goto error0; } } - i += num_recs; xfs_trans_brelse(tp, bp); bno = nextbno; /* @@ -4546,7 +4471,7 @@ xfs_bmap_read_extents( return error; block = XFS_BUF_TO_BMBT_BLOCK(bp); } - ASSERT(i == ifp->if_bytes / (uint)sizeof(*trp)); + ASSERT(i == (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))); ASSERT(i == XFS_IFORK_NEXTENTS(ip, whichfork)); xfs_bmap_trace_exlist(fname, ip, i, whichfork); return 0; @@ -4557,7 +4482,7 @@ error0: #ifdef XFS_BMAP_TRACE /* - * Add bmap trace insert entries for all the contents of the extent list. + * Add bmap trace insert entries for all the contents of the extent records. */ void xfs_bmap_trace_exlist( @@ -4566,16 +4491,15 @@ xfs_bmap_trace_exlist( xfs_extnum_t cnt, /* count of entries in the list */ int whichfork) /* data or attr fork */ { - xfs_bmbt_rec_t *base; /* base of extent list */ - xfs_bmbt_rec_t *ep; /* current entry in extent list */ - xfs_extnum_t idx; /* extent list entry number */ + xfs_bmbt_rec_t *ep; /* current extent record */ + xfs_extnum_t idx; /* extent record index */ xfs_ifork_t *ifp; /* inode fork pointer */ - xfs_bmbt_irec_t s; /* extent list record */ + xfs_bmbt_irec_t s; /* file extent record */ ifp = XFS_IFORK_PTR(ip, whichfork); - ASSERT(cnt == ifp->if_bytes / (uint)sizeof(*base)); - base = ifp->if_u1.if_extents; - for (idx = 0, ep = base; idx < cnt; idx++, ep++) { + ASSERT(cnt == (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))); + for (idx = 0; idx < cnt; idx++) { + ep = xfs_iext_get_ext(ifp, idx); xfs_bmbt_get_all(ep, &s); xfs_bmap_trace_insert(fname, "exlist", ip, idx, 1, &s, NULL, whichfork); @@ -4661,14 +4585,14 @@ xfs_bmapi( xfs_bmalloca_t bma; /* args for xfs_bmap_alloc */ xfs_btree_cur_t *cur; /* bmap btree cursor */ xfs_fileoff_t end; /* end of mapped file region */ - int eof; /* we've hit the end of extent list */ + int eof; /* we've hit the end of extents */ char contig; /* allocation must be one extent */ char delay; /* this request is for delayed alloc */ char exact; /* don't do all of wasdelayed extent */ char convert; /* unwritten extent I/O completion */ - xfs_bmbt_rec_t *ep; /* extent list entry pointer */ + xfs_bmbt_rec_t *ep; /* extent record pointer */ int error; /* error return */ - xfs_bmbt_irec_t got; /* current extent list record */ + xfs_bmbt_irec_t got; /* current file extent record */ xfs_ifork_t *ifp; /* inode fork pointer */ xfs_extlen_t indlen; /* indirect blocks length */ xfs_extnum_t lastx; /* last useful extent number */ @@ -4680,7 +4604,7 @@ xfs_bmapi( int nallocs; /* number of extents alloc\'d */ xfs_extnum_t nextents; /* number of extents in file */ xfs_fileoff_t obno; /* old block number (offset) */ - xfs_bmbt_irec_t prev; /* previous extent list record */ + xfs_bmbt_irec_t prev; /* previous file extent record */ int tmp_logflags; /* temp flags holder */ int whichfork; /* data or attr fork */ char inhole; /* current location is hole in file */ @@ -4805,7 +4729,7 @@ xfs_bmapi( alen = (xfs_extlen_t)got.br_blockcount; aoff = got.br_startoff; if (lastx != NULLEXTNUM && lastx) { - ep = &ifp->if_u1.if_extents[lastx - 1]; + ep = xfs_iext_get_ext(ifp, lastx - 1); xfs_bmbt_get_all(ep, &prev); } } else if (wasdelay) { @@ -5016,7 +4940,7 @@ xfs_bmapi( if (error) goto error0; lastx = ifp->if_lastex; - ep = &ifp->if_u1.if_extents[lastx]; + ep = xfs_iext_get_ext(ifp, lastx); nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); xfs_bmbt_get_all(ep, &got); ASSERT(got.br_startoff <= aoff); @@ -5112,7 +5036,7 @@ xfs_bmapi( if (error) goto error0; lastx = ifp->if_lastex; - ep = &ifp->if_u1.if_extents[lastx]; + ep = xfs_iext_get_ext(ifp, lastx); nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); xfs_bmbt_get_all(ep, &got); /* @@ -5168,8 +5092,7 @@ xfs_bmapi( /* * Else go on to the next record. */ - ep++; - lastx++; + ep = xfs_iext_get_ext(ifp, ++lastx); if (lastx >= nextents) { eof = 1; prev = got; @@ -5199,7 +5122,7 @@ xfs_bmapi( error0: /* * Log everything. Do this after conversion, there's no point in - * logging the extent list if we've converted to btree format. + * logging the extent records if we've converted to btree format. */ if ((logflags & XFS_ILOG_FEXT(whichfork)) && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) @@ -5252,12 +5175,12 @@ xfs_bmapi_single( xfs_fsblock_t *fsb, /* output: mapped block */ xfs_fileoff_t bno) /* starting file offs. mapped */ { - int eof; /* we've hit the end of extent list */ + int eof; /* we've hit the end of extents */ int error; /* error return */ - xfs_bmbt_irec_t got; /* current extent list record */ + xfs_bmbt_irec_t got; /* current file extent record */ xfs_ifork_t *ifp; /* inode fork pointer */ xfs_extnum_t lastx; /* last useful extent number */ - xfs_bmbt_irec_t prev; /* previous extent list record */ + xfs_bmbt_irec_t prev; /* previous file extent record */ ifp = XFS_IFORK_PTR(ip, whichfork); if (unlikely( @@ -5312,18 +5235,18 @@ xfs_bunmapi( xfs_btree_cur_t *cur; /* bmap btree cursor */ xfs_bmbt_irec_t del; /* extent being deleted */ int eof; /* is deleting at eof */ - xfs_bmbt_rec_t *ep; /* extent list entry pointer */ + xfs_bmbt_rec_t *ep; /* extent record pointer */ int error; /* error return value */ xfs_extnum_t extno; /* extent number in list */ - xfs_bmbt_irec_t got; /* current extent list entry */ + xfs_bmbt_irec_t got; /* current extent record */ xfs_ifork_t *ifp; /* inode fork pointer */ int isrt; /* freeing in rt area */ xfs_extnum_t lastx; /* last extent index used */ int logflags; /* transaction logging flags */ xfs_extlen_t mod; /* rt extent offset */ xfs_mount_t *mp; /* mount structure */ - xfs_extnum_t nextents; /* size of extent list */ - xfs_bmbt_irec_t prev; /* previous extent list entry */ + xfs_extnum_t nextents; /* number of file extents */ + xfs_bmbt_irec_t prev; /* previous extent record */ xfs_fileoff_t start; /* first file offset deleted */ int tmp_logflags; /* partial logging flags */ int wasdel; /* was a delayed alloc extent */ @@ -5369,7 +5292,7 @@ xfs_bunmapi( * file, back up to the last block if so... */ if (eof) { - ep = &ifp->if_u1.if_extents[--lastx]; + ep = xfs_iext_get_ext(ifp, --lastx); xfs_bmbt_get_all(ep, &got); bno = got.br_startoff + got.br_blockcount - 1; } @@ -5393,7 +5316,7 @@ xfs_bunmapi( if (got.br_startoff > bno) { if (--lastx < 0) break; - ep--; + ep = xfs_iext_get_ext(ifp, lastx); xfs_bmbt_get_all(ep, &got); } /* @@ -5440,7 +5363,8 @@ xfs_bunmapi( del.br_blockcount : mod; if (bno < got.br_startoff) { if (--lastx >= 0) - xfs_bmbt_get_all(--ep, &got); + xfs_bmbt_get_all(xfs_iext_get_ext( + ifp, lastx), &got); } continue; } @@ -5500,7 +5424,8 @@ xfs_bunmapi( * try again. */ ASSERT(lastx > 0); - xfs_bmbt_get_all(ep - 1, &prev); + xfs_bmbt_get_all(xfs_iext_get_ext(ifp, + lastx - 1), &prev); ASSERT(prev.br_state == XFS_EXT_NORM); ASSERT(!ISNULLSTARTBLOCK(prev.br_startblock)); ASSERT(del.br_startblock == @@ -5587,12 +5512,12 @@ nodelete: * If not done go on to the next (previous) record. * Reset ep in case the extents array was re-alloced. */ - ep = &ifp->if_u1.if_extents[lastx]; + ep = xfs_iext_get_ext(ifp, lastx); if (bno != (xfs_fileoff_t)-1 && bno >= start) { if (lastx >= XFS_IFORK_NEXTENTS(ip, whichfork) || xfs_bmbt_get_startoff(ep) > bno) { - lastx--; - ep--; + if (--lastx >= 0) + ep = xfs_iext_get_ext(ifp, lastx); } if (lastx >= 0) xfs_bmbt_get_all(ep, &got); @@ -5636,7 +5561,7 @@ nodelete: error0: /* * Log everything. Do this after conversion, there's no point in - * logging the extent list if we've converted to btree format. + * logging the extent records if we've converted to btree format. */ if ((logflags & XFS_ILOG_FEXT(whichfork)) && XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) @@ -5892,9 +5817,9 @@ xfs_bmap_isaeof( { int error; /* error return value */ xfs_ifork_t *ifp; /* inode fork pointer */ - xfs_bmbt_rec_t *lastrec; /* extent list entry pointer */ - xfs_extnum_t nextents; /* size of extent list */ - xfs_bmbt_irec_t s; /* expanded extent list entry */ + xfs_bmbt_rec_t *lastrec; /* extent record pointer */ + xfs_extnum_t nextents; /* number of file extents */ + xfs_bmbt_irec_t s; /* expanded extent record */ ASSERT(whichfork == XFS_DATA_FORK); ifp = XFS_IFORK_PTR(ip, whichfork); @@ -5909,7 +5834,7 @@ xfs_bmap_isaeof( /* * Go to the last extent */ - lastrec = &ifp->if_u1.if_extents[nextents - 1]; + lastrec = xfs_iext_get_ext(ifp, nextents - 1); xfs_bmbt_get_all(lastrec, &s); /* * Check we are allocating in the last extent (for delayed allocations) @@ -5936,8 +5861,8 @@ xfs_bmap_eof( xfs_fsblock_t blockcount; /* extent block count */ int error; /* error return value */ xfs_ifork_t *ifp; /* inode fork pointer */ - xfs_bmbt_rec_t *lastrec; /* extent list entry pointer */ - xfs_extnum_t nextents; /* size of extent list */ + xfs_bmbt_rec_t *lastrec; /* extent record pointer */ + xfs_extnum_t nextents; /* number of file extents */ xfs_fileoff_t startoff; /* extent starting file offset */ ASSERT(whichfork == XFS_DATA_FORK); @@ -5953,7 +5878,7 @@ xfs_bmap_eof( /* * Go to the last extent */ - lastrec = &ifp->if_u1.if_extents[nextents - 1]; + lastrec = xfs_iext_get_ext(ifp, nextents - 1); startoff = xfs_bmbt_get_startoff(lastrec); blockcount = xfs_bmbt_get_blockcount(lastrec); *eof = endoff >= startoff + blockcount; @@ -5969,18 +5894,21 @@ xfs_bmap_check_extents( xfs_inode_t *ip, /* incore inode pointer */ int whichfork) /* data or attr fork */ { - xfs_bmbt_rec_t *base; /* base of extents list */ xfs_bmbt_rec_t *ep; /* current extent entry */ + xfs_extnum_t idx; /* extent record index */ xfs_ifork_t *ifp; /* inode fork pointer */ xfs_extnum_t nextents; /* number of extents in list */ + xfs_bmbt_rec_t *nextp; /* next extent entry */ ifp = XFS_IFORK_PTR(ip, whichfork); ASSERT(ifp->if_flags & XFS_IFEXTENTS); - base = ifp->if_u1.if_extents; nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); - for (ep = base; ep < &base[nextents - 1]; ep++) { + ep = xfs_iext_get_ext(ifp, 0); + for (idx = 0; idx < nextents - 1; idx++) { + nextp = xfs_iext_get_ext(ifp, idx + 1); xfs_btree_check_rec(XFS_BTNUM_BMAP, (void *)ep, - (void *)(ep + 1)); + (void *)(nextp)); + ep = nextp; } } @@ -6119,12 +6047,14 @@ xfs_bmap_check_leaf_extents( xfs_fsblock_t bno; /* block # of "block" */ xfs_buf_t *bp; /* buffer for "block" */ int error; /* error return value */ - xfs_extnum_t i=0; /* index into the extents list */ + xfs_extnum_t i=0, j; /* index into the extents list */ xfs_ifork_t *ifp; /* fork structure */ int level; /* btree level, for checking */ xfs_mount_t *mp; /* file system mount structure */ xfs_bmbt_ptr_t *pp; /* pointer to block address */ - xfs_bmbt_rec_t *ep, *lastp; /* extent pointers in block entry */ + xfs_bmbt_rec_t *ep; /* pointer to current extent */ + xfs_bmbt_rec_t *lastp; /* pointer to previous extent */ + xfs_bmbt_rec_t *nextp; /* pointer to next extent */ int bp_release = 0; if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) { @@ -6194,7 +6124,6 @@ xfs_bmap_check_leaf_extents( */ lastp = NULL; for (;;) { - xfs_bmbt_rec_t *frp; xfs_fsblock_t nextbno; xfs_extnum_t num_recs; @@ -6213,18 +6142,20 @@ xfs_bmap_check_leaf_extents( * conform with the first entry in this one. */ - frp = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_bmbt, + ep = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_bmbt, block, 1, mp->m_bmap_dmxr[0]); - - for (ep = frp;ep < frp + (num_recs - 1); ep++) { + for (j = 1; j < num_recs; j++) { + nextp = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_bmbt, + block, j + 1, mp->m_bmap_dmxr[0]); if (lastp) { xfs_btree_check_rec(XFS_BTNUM_BMAP, (void *)lastp, (void *)ep); } xfs_btree_check_rec(XFS_BTNUM_BMAP, (void *)ep, - (void *)(ep + 1)); + (void *)(nextp)); + lastp = ep; + ep = nextp; } - lastp = frp + num_recs - 1; /* For the next iteration */ i += num_recs; if (bp_release) { @@ -6288,7 +6219,7 @@ xfs_bmap_count_blocks( mp = ip->i_mount; ifp = XFS_IFORK_PTR(ip, whichfork); if ( XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS ) { - if (unlikely(xfs_bmap_count_leaves(ifp->if_u1.if_extents, + if (unlikely(xfs_bmap_count_leaves(ifp, 0, ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t), count) < 0)) { XFS_ERROR_REPORT("xfs_bmap_count_blocks(1)", @@ -6310,7 +6241,7 @@ xfs_bmap_count_blocks( ASSERT(XFS_FSB_TO_AGBNO(mp, INT_GET(*pp, ARCH_CONVERT)) < mp->m_sb.sb_agblocks); bno = INT_GET(*pp, ARCH_CONVERT); - if (unlikely(xfs_bmap_count_tree(mp, tp, bno, level, count) < 0)) { + if (unlikely(xfs_bmap_count_tree(mp, tp, ifp, bno, level, count) < 0)) { XFS_ERROR_REPORT("xfs_bmap_count_blocks(2)", XFS_ERRLEVEL_LOW, mp); return XFS_ERROR(EFSCORRUPTED); @@ -6327,6 +6258,7 @@ int /* error */ xfs_bmap_count_tree( xfs_mount_t *mp, /* file system mount point */ xfs_trans_t *tp, /* transaction pointer */ + xfs_ifork_t *ifp, /* inode fork pointer */ xfs_fsblock_t blockno, /* file system block number */ int levelin, /* level in btree */ int *count) /* Count of blocks */ @@ -6339,7 +6271,6 @@ xfs_bmap_count_tree( xfs_fsblock_t nextbno; xfs_bmbt_block_t *block, *nextblock; int numrecs; - xfs_bmbt_rec_t *frp; if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, XFS_BMAP_BTREE_REF))) return error; @@ -6364,7 +6295,7 @@ xfs_bmap_count_tree( xfs_bmbt, block, 1, mp->m_bmap_dmxr[1]); bno = INT_GET(*pp, ARCH_CONVERT); if (unlikely((error = - xfs_bmap_count_tree(mp, tp, bno, level, count)) < 0)) { + xfs_bmap_count_tree(mp, tp, ifp, bno, level, count)) < 0)) { xfs_trans_brelse(tp, bp); XFS_ERROR_REPORT("xfs_bmap_count_tree(1)", XFS_ERRLEVEL_LOW, mp); @@ -6376,9 +6307,8 @@ xfs_bmap_count_tree( for (;;) { nextbno = be64_to_cpu(block->bb_rightsib); numrecs = be16_to_cpu(block->bb_numrecs); - frp = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, - xfs_bmbt, block, 1, mp->m_bmap_dmxr[0]); - if (unlikely(xfs_bmap_disk_count_leaves(frp, numrecs, count) < 0)) { + if (unlikely(xfs_bmap_disk_count_leaves(ifp, mp, + 0, block, numrecs, count) < 0)) { xfs_trans_brelse(tp, bp); XFS_ERROR_REPORT("xfs_bmap_count_tree(2)", XFS_ERRLEVEL_LOW, mp); @@ -6399,33 +6329,45 @@ xfs_bmap_count_tree( } /* - * Count leaf blocks given a pointer to an extent list. + * Count leaf blocks given a range of extent records. */ int xfs_bmap_count_leaves( - xfs_bmbt_rec_t *frp, + xfs_ifork_t *ifp, + xfs_extnum_t idx, int numrecs, int *count) { int b; + xfs_bmbt_rec_t *frp; - for ( b = 1; b <= numrecs; b++, frp++) + for (b = 0; b < numrecs; b++) { + frp = xfs_iext_get_ext(ifp, idx + b); *count += xfs_bmbt_get_blockcount(frp); + } return 0; } /* - * Count leaf blocks given a pointer to an extent list originally in btree format. + * Count leaf blocks given a range of extent records originally + * in btree format. */ int xfs_bmap_disk_count_leaves( - xfs_bmbt_rec_t *frp, + xfs_ifork_t *ifp, + xfs_mount_t *mp, + xfs_extnum_t idx, + xfs_bmbt_block_t *block, int numrecs, int *count) { int b; + xfs_bmbt_rec_t *frp; - for ( b = 1; b <= numrecs; b++, frp++) + for (b = 1; b <= numrecs; b++) { + frp = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, + xfs_bmbt, block, idx + b, mp->m_bmap_dmxr[0]); *count += xfs_bmbt_disk_get_blockcount(frp); + } return 0; } diff --git a/fs/xfs/xfs_bmap.h b/fs/xfs/xfs_bmap.h index 12cc63dfc2c4..4c05f95452c2 100644 --- a/fs/xfs/xfs_bmap.h +++ b/fs/xfs/xfs_bmap.h @@ -20,6 +20,7 @@ struct getbmap; struct xfs_bmbt_irec; +struct xfs_ifork; struct xfs_inode; struct xfs_mount; struct xfs_trans; @@ -347,7 +348,8 @@ xfs_bmap_count_blocks( */ int xfs_check_nostate_extents( - xfs_bmbt_rec_t *ep, + struct xfs_ifork *ifp, + xfs_extnum_t idx, xfs_extnum_t num); #endif /* __KERNEL__ */ diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c index 3f1383d160e8..bea44709afbe 100644 --- a/fs/xfs/xfs_bmap_btree.c +++ b/fs/xfs/xfs_bmap_btree.c @@ -2754,7 +2754,7 @@ xfs_bmbt_update( } /* - * Check an extent list, which has just been read, for + * Check extent records, which have just been read, for * any bit in the extent flag field. ASSERT on debug * kernels, as this condition should not occur. * Return an error condition (1) if any flags found, @@ -2763,10 +2763,14 @@ xfs_bmbt_update( int xfs_check_nostate_extents( - xfs_bmbt_rec_t *ep, + xfs_ifork_t *ifp, + xfs_extnum_t idx, xfs_extnum_t num) { - for (; num > 0; num--, ep++) { + xfs_bmbt_rec_t *ep; + + for (; num > 0; num--, idx++) { + ep = xfs_iext_get_ext(ifp, idx); if ((ep->l0 >> (64 - BMBT_EXNTFLAG_BITLEN)) != 0) { ASSERT(0); diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 1d7f5a7e063e..6459395a0e40 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -76,16 +76,18 @@ STATIC int xfs_iformat_btree(xfs_inode_t *, xfs_dinode_t *, int); */ STATIC void xfs_validate_extents( - xfs_bmbt_rec_t *ep, + xfs_ifork_t *ifp, int nrecs, int disk, xfs_exntfmt_t fmt) { + xfs_bmbt_rec_t *ep; xfs_bmbt_irec_t irec; xfs_bmbt_rec_t rec; int i; for (i = 0; i < nrecs; i++) { + ep = xfs_iext_get_ext(ifp, i); rec.l0 = get_unaligned((__uint64_t*)&ep->l0); rec.l1 = get_unaligned((__uint64_t*)&ep->l1); if (disk) @@ -94,11 +96,10 @@ xfs_validate_extents( xfs_bmbt_get_all(&rec, &irec); if (fmt == XFS_EXTFMT_NOSTATE) ASSERT(irec.br_state == XFS_EXT_NORM); - ep++; } } #else /* DEBUG */ -#define xfs_validate_extents(ep, nrecs, disk, fmt) +#define xfs_validate_extents(ifp, nrecs, disk, fmt) #endif /* DEBUG */ /* @@ -597,7 +598,6 @@ xfs_iformat_extents( xfs_bmbt_rec_t *ep, *dp; xfs_ifork_t *ifp; int nex; - int real_size; int size; int i; @@ -619,23 +619,20 @@ xfs_iformat_extents( return XFS_ERROR(EFSCORRUPTED); } - real_size = 0; + ifp->if_real_bytes = 0; if (nex == 0) ifp->if_u1.if_extents = NULL; else if (nex <= XFS_INLINE_EXTS) ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext; - else { - ifp->if_u1.if_extents = kmem_alloc(size, KM_SLEEP); - ASSERT(ifp->if_u1.if_extents != NULL); - real_size = size; - } + else + xfs_iext_add(ifp, 0, nex); + ifp->if_bytes = size; - ifp->if_real_bytes = real_size; if (size) { dp = (xfs_bmbt_rec_t *) XFS_DFORK_PTR(dip, whichfork); - xfs_validate_extents(dp, nex, 1, XFS_EXTFMT_INODE(ip)); - ep = ifp->if_u1.if_extents; - for (i = 0; i < nex; i++, ep++, dp++) { + xfs_validate_extents(ifp, nex, 1, XFS_EXTFMT_INODE(ip)); + for (i = 0; i < nex; i++, dp++) { + ep = xfs_iext_get_ext(ifp, i); ep->l0 = INT_GET(get_unaligned((__uint64_t*)&dp->l0), ARCH_CONVERT); ep->l1 = INT_GET(get_unaligned((__uint64_t*)&dp->l1), @@ -646,7 +643,7 @@ xfs_iformat_extents( if (whichfork != XFS_DATA_FORK || XFS_EXTFMT_INODE(ip) == XFS_EXTFMT_NOSTATE) if (unlikely(xfs_check_nostate_extents( - ifp->if_u1.if_extents, nex))) { + ifp, 0, nex))) { XFS_ERROR_REPORT("xfs_iformat_extents(2)", XFS_ERRLEVEL_LOW, ip->i_mount); @@ -1015,6 +1012,7 @@ xfs_iread_extents( { int error; xfs_ifork_t *ifp; + xfs_extnum_t nextents; size_t size; if (unlikely(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) { @@ -1022,26 +1020,24 @@ xfs_iread_extents( ip->i_mount); return XFS_ERROR(EFSCORRUPTED); } - size = XFS_IFORK_NEXTENTS(ip, whichfork) * (uint)sizeof(xfs_bmbt_rec_t); + nextents = XFS_IFORK_NEXTENTS(ip, whichfork); + size = nextents * sizeof(xfs_bmbt_rec_t); ifp = XFS_IFORK_PTR(ip, whichfork); + /* * We know that the size is valid (it's checked in iformat_btree) */ - ifp->if_u1.if_extents = kmem_alloc(size, KM_SLEEP); - ASSERT(ifp->if_u1.if_extents != NULL); ifp->if_lastex = NULLEXTNUM; - ifp->if_bytes = ifp->if_real_bytes = (int)size; + ifp->if_bytes = ifp->if_real_bytes = 0; ifp->if_flags |= XFS_IFEXTENTS; + xfs_iext_add(ifp, 0, nextents); error = xfs_bmap_read_extents(tp, ip, whichfork); if (error) { - kmem_free(ifp->if_u1.if_extents, size); - ifp->if_u1.if_extents = NULL; - ifp->if_bytes = ifp->if_real_bytes = 0; + xfs_iext_destroy(ifp); ifp->if_flags &= ~XFS_IFEXTENTS; return error; } - xfs_validate_extents((xfs_bmbt_rec_t *)ifp->if_u1.if_extents, - XFS_IFORK_NEXTENTS(ip, whichfork), 0, XFS_EXTFMT_INODE(ip)); + xfs_validate_extents(ifp, nextents, 0, XFS_EXTFMT_INODE(ip)); return 0; } @@ -2476,92 +2472,6 @@ xfs_iroot_realloc( /* - * This is called when the amount of space needed for if_extents - * is increased or decreased. The change in size is indicated by - * the number of extents that need to be added or deleted in the - * ext_diff parameter. - * - * If the amount of space needed has decreased below the size of the - * inline buffer, then switch to using the inline buffer. Otherwise, - * use kmem_realloc() or kmem_alloc() to adjust the size of the buffer - * to what is needed. - * - * ip -- the inode whose if_extents area is changing - * ext_diff -- the change in the number of extents, positive or negative, - * requested for the if_extents array. - */ -void -xfs_iext_realloc( - xfs_inode_t *ip, - int ext_diff, - int whichfork) -{ - int byte_diff; - xfs_ifork_t *ifp; - int new_size; - uint rnew_size; - - if (ext_diff == 0) { - return; - } - - ifp = XFS_IFORK_PTR(ip, whichfork); - byte_diff = ext_diff * (uint)sizeof(xfs_bmbt_rec_t); - new_size = (int)ifp->if_bytes + byte_diff; - ASSERT(new_size >= 0); - - if (new_size == 0) { - if (ifp->if_u1.if_extents != ifp->if_u2.if_inline_ext) { - ASSERT(ifp->if_real_bytes != 0); - kmem_free(ifp->if_u1.if_extents, ifp->if_real_bytes); - } - ifp->if_u1.if_extents = NULL; - rnew_size = 0; - } else if (new_size <= sizeof(ifp->if_u2.if_inline_ext)) { - /* - * If the valid extents can fit in if_inline_ext, - * copy them from the malloc'd vector and free it. - */ - if (ifp->if_u1.if_extents != ifp->if_u2.if_inline_ext) { - /* - * For now, empty files are format EXTENTS, - * so the if_extents pointer is null. - */ - if (ifp->if_u1.if_extents) { - memcpy(ifp->if_u2.if_inline_ext, - ifp->if_u1.if_extents, new_size); - kmem_free(ifp->if_u1.if_extents, - ifp->if_real_bytes); - } - ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext; - } - rnew_size = 0; - } else { - rnew_size = new_size; - if ((rnew_size & (rnew_size - 1)) != 0) - rnew_size = xfs_iroundup(rnew_size); - /* - * Stuck with malloc/realloc. - */ - if (ifp->if_u1.if_extents == ifp->if_u2.if_inline_ext) { - ifp->if_u1.if_extents = (xfs_bmbt_rec_t *) - kmem_alloc(rnew_size, KM_SLEEP); - memcpy(ifp->if_u1.if_extents, ifp->if_u2.if_inline_ext, - sizeof(ifp->if_u2.if_inline_ext)); - } else if (rnew_size != ifp->if_real_bytes) { - ifp->if_u1.if_extents = (xfs_bmbt_rec_t *) - kmem_realloc(ifp->if_u1.if_extents, - rnew_size, - ifp->if_real_bytes, - KM_NOFS); - } - } - ifp->if_real_bytes = rnew_size; - ifp->if_bytes = new_size; -} - - -/* * This is called when the amount of space needed for if_data * is increased or decreased. The change in size is indicated by * the number of bytes that need to be added or deleted in the @@ -2723,9 +2633,7 @@ xfs_idestroy_fork( (ifp->if_u1.if_extents != NULL) && (ifp->if_u1.if_extents != ifp->if_u2.if_inline_ext)) { ASSERT(ifp->if_real_bytes != 0); - kmem_free(ifp->if_u1.if_extents, ifp->if_real_bytes); - ifp->if_u1.if_extents = NULL; - ifp->if_real_bytes = 0; + xfs_iext_destroy(ifp); } ASSERT(ifp->if_u1.if_extents == NULL || ifp->if_u1.if_extents == ifp->if_u2.if_inline_ext); @@ -2902,16 +2810,15 @@ xfs_iextents_copy( * the delayed ones. There must be at least one * non-delayed extent. */ - ep = ifp->if_u1.if_extents; dest_ep = buffer; copied = 0; for (i = 0; i < nrecs; i++) { + ep = xfs_iext_get_ext(ifp, i); start_block = xfs_bmbt_get_startblock(ep); if (ISNULLSTARTBLOCK(start_block)) { /* * It's a delayed allocation extent, so skip it. */ - ep++; continue; } @@ -2921,11 +2828,10 @@ xfs_iextents_copy( put_unaligned(INT_GET(ep->l1, ARCH_CONVERT), (__uint64_t*)&dest_ep->l1); dest_ep++; - ep++; copied++; } ASSERT(copied != 0); - xfs_validate_extents(buffer, copied, 1, XFS_EXTFMT_INODE(ip)); + xfs_validate_extents(ifp, copied, 1, XFS_EXTFMT_INODE(ip)); return (copied * (uint)sizeof(xfs_bmbt_rec_t)); } @@ -2995,8 +2901,10 @@ xfs_iflush_fork( case XFS_DINODE_FMT_EXTENTS: ASSERT((ifp->if_flags & XFS_IFEXTENTS) || !(iip->ili_format.ilf_fields & extflag[whichfork])); - ASSERT((ifp->if_u1.if_extents != NULL) || (ifp->if_bytes == 0)); - ASSERT((ifp->if_u1.if_extents == NULL) || (ifp->if_bytes > 0)); + ASSERT((xfs_iext_get_ext(ifp, 0) != NULL) || + (ifp->if_bytes == 0)); + ASSERT((xfs_iext_get_ext(ifp, 0) == NULL) || + (ifp->if_bytes > 0)); if ((iip->ili_format.ilf_fields & extflag[whichfork]) && (ifp->if_bytes > 0)) { ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) > 0); @@ -3704,3 +3612,327 @@ xfs_ilock_trace(xfs_inode_t *ip, int lock, unsigned int lockflags, inst_t *ra) NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL); } #endif + +/* + * Return a pointer to the extent record at file index idx. + */ +xfs_bmbt_rec_t * +xfs_iext_get_ext( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t idx) /* index of target extent */ +{ + ASSERT(idx >= 0); + if (ifp->if_bytes) { + return &ifp->if_u1.if_extents[idx]; + } else { + return NULL; + } +} + +/* + * Insert new item(s) into the extent records for incore inode + * fork 'ifp'. 'count' new items are inserted at index 'idx'. + */ +void +xfs_iext_insert( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t idx, /* starting index of new items */ + xfs_extnum_t count, /* number of inserted items */ + xfs_bmbt_irec_t *new) /* items to insert */ +{ + xfs_bmbt_rec_t *ep; /* extent record pointer */ + xfs_extnum_t i; /* extent record index */ + + ASSERT(ifp->if_flags & XFS_IFEXTENTS); + xfs_iext_add(ifp, idx, count); + for (i = idx; i < idx + count; i++, new++) { + ep = xfs_iext_get_ext(ifp, i); + xfs_bmbt_set_all(ep, new); + } +} + +/* + * This is called when the amount of space required for incore file + * extents needs to be increased. The ext_diff parameter stores the + * number of new extents being added and the idx parameter contains + * the extent index where the new extents will be added. If the new + * extents are being appended, then we just need to (re)allocate and + * initialize the space. Otherwise, if the new extents are being + * inserted into the middle of the existing entries, a bit more work + * is required to make room for the new extents to be inserted. The + * caller is responsible for filling in the new extent entries upon + * return. + */ +void +xfs_iext_add( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t idx, /* index to begin adding exts */ + int ext_diff) /* nubmer of extents to add */ +{ + int byte_diff; /* new bytes being added */ + int new_size; /* size of extents after adding */ + xfs_extnum_t nextents; /* number of extents in file */ + + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + ASSERT((idx >= 0) && (idx <= nextents)); + byte_diff = ext_diff * sizeof(xfs_bmbt_rec_t); + new_size = ifp->if_bytes + byte_diff; + /* + * If the new number of extents (nextents + ext_diff) + * fits inside the inode, then continue to use the inline + * extent buffer. + */ + if (nextents + ext_diff <= XFS_INLINE_EXTS) { + if (idx < nextents) { + memmove(&ifp->if_u2.if_inline_ext[idx + ext_diff], + &ifp->if_u2.if_inline_ext[idx], + (nextents - idx) * sizeof(xfs_bmbt_rec_t)); + memset(&ifp->if_u2.if_inline_ext[idx], 0, byte_diff); + } + ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext; + ifp->if_real_bytes = 0; + } + /* + * Otherwise use a linear (direct) extent list. + * If the extents are currently inside the inode, + * xfs_iext_realloc_direct will switch us from + * inline to direct extent allocation mode. + */ + else { + xfs_iext_realloc_direct(ifp, new_size); + if (idx < nextents) { + memmove(&ifp->if_u1.if_extents[idx + ext_diff], + &ifp->if_u1.if_extents[idx], + (nextents - idx) * sizeof(xfs_bmbt_rec_t)); + memset(&ifp->if_u1.if_extents[idx], 0, byte_diff); + } + } + ifp->if_bytes = new_size; +} + +/* + * This is called when the amount of space required for incore file + * extents needs to be decreased. The ext_diff parameter stores the + * number of extents to be removed and the idx parameter contains + * the extent index where the extents will be removed from. + */ +void +xfs_iext_remove( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t idx, /* index to begin removing exts */ + int ext_diff) /* number of extents to remove */ +{ + xfs_extnum_t nextents; /* number of extents in file */ + int new_size; /* size of extents after removal */ + + ASSERT(ext_diff > 0); + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + new_size = (nextents - ext_diff) * sizeof(xfs_bmbt_rec_t); + + if (new_size == 0) { + xfs_iext_destroy(ifp); + } else if (ifp->if_real_bytes) { + xfs_iext_remove_direct(ifp, idx, ext_diff); + } else { + xfs_iext_remove_inline(ifp, idx, ext_diff); + } + ifp->if_bytes = new_size; +} + +/* + * This removes ext_diff extents from the inline buffer, beginning + * at extent index idx. + */ +void +xfs_iext_remove_inline( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t idx, /* index to begin removing exts */ + int ext_diff) /* number of extents to remove */ +{ + int nextents; /* number of extents in file */ + + ASSERT(idx < XFS_INLINE_EXTS); + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + ASSERT(((nextents - ext_diff) > 0) && + (nextents - ext_diff) < XFS_INLINE_EXTS); + + if (idx + ext_diff < nextents) { + memmove(&ifp->if_u2.if_inline_ext[idx], + &ifp->if_u2.if_inline_ext[idx + ext_diff], + (nextents - (idx + ext_diff)) * + sizeof(xfs_bmbt_rec_t)); + memset(&ifp->if_u2.if_inline_ext[nextents - ext_diff], + 0, ext_diff * sizeof(xfs_bmbt_rec_t)); + } else { + memset(&ifp->if_u2.if_inline_ext[idx], 0, + ext_diff * sizeof(xfs_bmbt_rec_t)); + } +} + +/* + * This removes ext_diff extents from a linear (direct) extent list, + * beginning at extent index idx. If the extents are being removed + * from the end of the list (ie. truncate) then we just need to re- + * allocate the list to remove the extra space. Otherwise, if the + * extents are being removed from the middle of the existing extent + * entries, then we first need to move the extent records beginning + * at idx + ext_diff up in the list to overwrite the records being + * removed, then remove the extra space via kmem_realloc. + */ +void +xfs_iext_remove_direct( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t idx, /* index to begin removing exts */ + int ext_diff) /* number of extents to remove */ +{ + xfs_extnum_t nextents; /* number of extents in file */ + int new_size; /* size of extents after removal */ + + new_size = ifp->if_bytes - + (ext_diff * sizeof(xfs_bmbt_rec_t)); + nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); + + if (new_size == 0) { + xfs_iext_destroy(ifp); + return; + } + /* Move extents up in the list (if needed) */ + if (idx + ext_diff < nextents) { + memmove(&ifp->if_u1.if_extents[idx], + &ifp->if_u1.if_extents[idx + ext_diff], + (nextents - (idx + ext_diff)) * + sizeof(xfs_bmbt_rec_t)); + } + memset(&ifp->if_u1.if_extents[nextents - ext_diff], + 0, ext_diff * sizeof(xfs_bmbt_rec_t)); + /* + * Reallocate the direct extent list. If the extents + * will fit inside the inode then xfs_iext_realloc_direct + * will switch from direct to inline extent allocation + * mode for us. + */ + xfs_iext_realloc_direct(ifp, new_size); + ifp->if_bytes = new_size; +} + +/* + * Create, destroy, or resize a linear (direct) block of extents. + */ +void +xfs_iext_realloc_direct( + xfs_ifork_t *ifp, /* inode fork pointer */ + int new_size) /* new size of extents */ +{ + int rnew_size; /* real new size of extents */ + + rnew_size = new_size; + + /* Free extent records */ + if (new_size == 0) { + xfs_iext_destroy(ifp); + } + /* Resize direct extent list and zero any new bytes */ + else if (ifp->if_real_bytes) { + /* Check if extents will fit inside the inode */ + if (new_size <= XFS_INLINE_EXTS * sizeof(xfs_bmbt_rec_t)) { + xfs_iext_direct_to_inline(ifp, new_size / + (uint)sizeof(xfs_bmbt_rec_t)); + ifp->if_bytes = new_size; + return; + } + if ((new_size & (new_size - 1)) != 0) { + rnew_size = xfs_iroundup(new_size); + } + if (rnew_size != ifp->if_real_bytes) { + ifp->if_u1.if_extents = (xfs_bmbt_rec_t *) + kmem_realloc(ifp->if_u1.if_extents, + rnew_size, + ifp->if_real_bytes, + KM_SLEEP); + } + if (rnew_size > ifp->if_real_bytes) { + memset(&ifp->if_u1.if_extents[ifp->if_bytes / + (uint)sizeof(xfs_bmbt_rec_t)], 0, + rnew_size - ifp->if_real_bytes); + } + } + /* + * Switch from the inline extent buffer to a direct + * extent list. Be sure to include the inline extent + * bytes in new_size. + */ + else { + new_size += ifp->if_bytes; + if ((new_size & (new_size - 1)) != 0) { + rnew_size = xfs_iroundup(new_size); + } + xfs_iext_inline_to_direct(ifp, rnew_size); + } + ifp->if_real_bytes = rnew_size; + ifp->if_bytes = new_size; +} + +/* + * Switch from linear (direct) extent records to inline buffer. + */ +void +xfs_iext_direct_to_inline( + xfs_ifork_t *ifp, /* inode fork pointer */ + xfs_extnum_t nextents) /* number of extents in file */ +{ + ASSERT(ifp->if_flags & XFS_IFEXTENTS); + ASSERT(nextents <= XFS_INLINE_EXTS); + /* + * The inline buffer was zeroed when we switched + * from inline to direct extent allocation mode, + * so we don't need to clear it here. + */ + memcpy(ifp->if_u2.if_inline_ext, ifp->if_u1.if_extents, + nextents * sizeof(xfs_bmbt_rec_t)); + kmem_free(ifp->if_u1.if_extents, KM_SLEEP); + ifp->if_u1.if_extents = ifp->if_u2.if_inline_ext; + ifp->if_real_bytes = 0; +} + +/* + * Switch from inline buffer to linear (direct) extent records. + * new_size should already be rounded up to the next power of 2 + * by the caller (when appropriate), so use new_size as it is. + * However, since new_size may be rounded up, we can't update + * if_bytes here. It is the caller's responsibility to update + * if_bytes upon return. + */ +void +xfs_iext_inline_to_direct( + xfs_ifork_t *ifp, /* inode fork pointer */ + int new_size) /* number of extents in file */ +{ + ifp->if_u1.if_extents = (xfs_bmbt_rec_t *) + kmem_alloc(new_size, KM_SLEEP); + memset(ifp->if_u1.if_extents, 0, new_size); + if (ifp->if_bytes) { + memcpy(ifp->if_u1.if_extents, ifp->if_u2.if_inline_ext, + ifp->if_bytes); + memset(ifp->if_u2.if_inline_ext, 0, XFS_INLINE_EXTS * + sizeof(xfs_bmbt_rec_t)); + } + ifp->if_real_bytes = new_size; +} + +/* + * Free incore file extents. + */ +void +xfs_iext_destroy( + xfs_ifork_t *ifp) /* inode fork pointer */ +{ + if (ifp->if_real_bytes) { + kmem_free(ifp->if_u1.if_extents, ifp->if_real_bytes); + } else if (ifp->if_bytes) { + memset(ifp->if_u2.if_inline_ext, 0, XFS_INLINE_EXTS * + sizeof(xfs_bmbt_rec_t)); + } + ifp->if_u1.if_extents = NULL; + ifp->if_real_bytes = 0; + ifp->if_bytes = 0; +} diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 1cfbcf18ce86..740b73fabd2f 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -70,12 +70,6 @@ typedef struct xfs_ifork { */ #define XFS_IMAP_LOOKUP 0x1 -/* - * Maximum number of extent pointers in if_u1.if_extents. - */ -#define XFS_MAX_INCORE_EXTENTS 32768 - - #ifdef __KERNEL__ struct bhv_desc; struct cred; @@ -440,6 +434,18 @@ xfs_inode_t *xfs_vtoi(struct vnode *vp); void xfs_synchronize_atime(xfs_inode_t *); +xfs_bmbt_rec_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); +void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t, + xfs_bmbt_irec_t *); +void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); +void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int); +void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); +void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); +void xfs_iext_realloc_direct(xfs_ifork_t *, int); +void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); +void xfs_iext_inline_to_direct(xfs_ifork_t *, int); +void xfs_iext_destroy(xfs_ifork_t *); + #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) #ifdef DEBUG |
