diff options
| -rw-r--r-- | fs/xfs/xfs_dir2_node.c | 69 |
1 files changed, 43 insertions, 26 deletions
diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c index 1b5430223461..fa6c3a5ddbc6 100644 --- a/fs/xfs/xfs_dir2_node.c +++ b/fs/xfs/xfs_dir2_node.c @@ -549,7 +549,6 @@ xfs_dir2_leafn_lookup_for_entry( xfs_dir2_data_entry_t *dep; /* data block entry */ xfs_inode_t *dp; /* incore directory inode */ int error; /* error return value */ - int di = -1; /* data entry index */ int index; /* leaf entry index */ xfs_dir2_leaf_t *leaf; /* leaf structure */ xfs_dir2_leaf_entry_t *lep; /* leaf entry */ @@ -577,7 +576,6 @@ xfs_dir2_leafn_lookup_for_entry( if (state->extravalid) { curbp = state->extrablk.bp; curdb = state->extrablk.blkno; - di = state->extrablk.index; } /* * Loop over leaf entries with the right hash value. @@ -602,17 +600,27 @@ xfs_dir2_leafn_lookup_for_entry( */ if (newdb != curdb) { /* - * If we had a block before, drop it. + * If we had a block before that we aren't saving + * for a CI name, drop it */ - if (curbp) + if (curbp && (args->cmpresult == XFS_CMP_DIFFERENT || + curdb != state->extrablk.blkno)) xfs_da_brelse(tp, curbp); /* - * Read the data block. + * If needing the block that is saved with a CI match, + * use it otherwise read in the new data block. */ - error = xfs_da_read_buf(tp, dp, xfs_dir2_db_to_da(mp, - newdb), -1, &curbp, XFS_DATA_FORK); - if (error) - return error; + if (args->cmpresult != XFS_CMP_DIFFERENT && + newdb == state->extrablk.blkno) { + ASSERT(state->extravalid); + curbp = state->extrablk.bp; + } else { + error = xfs_da_read_buf(tp, dp, + xfs_dir2_db_to_da(mp, newdb), + -1, &curbp, XFS_DATA_FORK); + if (error) + return error; + } xfs_dir2_data_check(dp, curbp); curdb = newdb; } @@ -624,38 +632,47 @@ xfs_dir2_leafn_lookup_for_entry( /* * Compare the entry and if it's an exact match, return * EEXIST immediately. If it's the first case-insensitive - * match, store the inode number and continue looking. + * match, store the block & inode number and continue looking. */ cmp = mp->m_dirnameops->compname(args, dep->name, dep->namelen); if (cmp != XFS_CMP_DIFFERENT && cmp != args->cmpresult) { + /* If there is a CI match block, drop it */ + if (args->cmpresult != XFS_CMP_DIFFERENT && + curdb != state->extrablk.blkno) + xfs_da_brelse(tp, state->extrablk.bp); args->cmpresult = cmp; args->inumber = be64_to_cpu(dep->inumber); - di = (int)((char *)dep - (char *)curbp->data); - error = EEXIST; + *indexp = index; + state->extravalid = 1; + state->extrablk.bp = curbp; + state->extrablk.blkno = curdb; + state->extrablk.index = (int)((char *)dep - + (char *)curbp->data); + state->extrablk.magic = XFS_DIR2_DATA_MAGIC; if (cmp == XFS_CMP_EXACT) - goto out; + return XFS_ERROR(EEXIST); } } - /* Didn't find an exact match. */ - error = ENOENT; ASSERT(index == be16_to_cpu(leaf->hdr.count) || (args->op_flags & XFS_DA_OP_OKNOENT)); -out: if (curbp) { - /* Giving back a data block. */ - state->extravalid = 1; - state->extrablk.bp = curbp; - state->extrablk.index = di; - state->extrablk.blkno = curdb; - state->extrablk.magic = XFS_DIR2_DATA_MAGIC; + if (args->cmpresult == XFS_CMP_DIFFERENT) { + /* Giving back last used data block. */ + state->extravalid = 1; + state->extrablk.bp = curbp; + state->extrablk.index = -1; + state->extrablk.blkno = curdb; + state->extrablk.magic = XFS_DIR2_DATA_MAGIC; + } else { + /* If the curbp is not the CI match block, drop it */ + if (state->extrablk.bp != curbp) + xfs_da_brelse(tp, curbp); + } } else { state->extravalid = 0; } - /* - * Return the index, that will be the deletion point for remove/replace. - */ *indexp = index; - return XFS_ERROR(error); + return XFS_ERROR(ENOENT); } /* |
