diff options
Diffstat (limited to 'fs/xfs/xfs_buf.c')
| -rw-r--r-- | fs/xfs/xfs_buf.c | 44 |
1 files changed, 26 insertions, 18 deletions
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 21c243622a79..a0229c368e78 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -238,7 +238,7 @@ _xfs_buf_alloc( */ error = xfs_buf_get_maps(bp, nmaps); if (error) { - kmem_zone_free(xfs_buf_zone, bp); + kmem_cache_free(xfs_buf_zone, bp); return NULL; } @@ -304,7 +304,7 @@ _xfs_buf_free_pages( * The buffer must not be on any hash - use xfs_buf_rele instead for * hashed and refcounted buffers */ -void +static void xfs_buf_free( xfs_buf_t *bp) { @@ -328,7 +328,7 @@ xfs_buf_free( kmem_free(bp->b_addr); _xfs_buf_free_pages(bp); xfs_buf_free_maps(bp); - kmem_zone_free(xfs_buf_zone, bp); + kmem_cache_free(xfs_buf_zone, bp); } /* @@ -345,6 +345,15 @@ xfs_buf_allocate_memory( unsigned short page_count, i; xfs_off_t start, end; int error; + xfs_km_flags_t kmflag_mask = 0; + + /* + * assure zeroed buffer for non-read cases. + */ + if (!(flags & XBF_READ)) { + kmflag_mask |= KM_ZERO; + gfp_mask |= __GFP_ZERO; + } /* * for buffers that are contained within a single page, just allocate @@ -354,7 +363,8 @@ xfs_buf_allocate_memory( size = BBTOB(bp->b_length); if (size < PAGE_SIZE) { int align_mask = xfs_buftarg_dma_alignment(bp->b_target); - bp->b_addr = kmem_alloc_io(size, align_mask, KM_NOFS); + bp->b_addr = kmem_alloc_io(size, align_mask, + KM_NOFS | kmflag_mask); if (!bp->b_addr) { /* low memory - use alloc_page loop instead */ goto use_alloc_page; @@ -451,7 +461,7 @@ _xfs_buf_map_pages( unsigned nofs_flag; /* - * vm_map_ram() will allocate auxillary structures (e.g. + * vm_map_ram() will allocate auxiliary structures (e.g. * pagetables) with GFP_KERNEL, yet we are likely to be under * GFP_NOFS context here. Hence we need to tell memory reclaim * that we are in such a context via PF_MEMALLOC_NOFS to prevent @@ -939,7 +949,7 @@ xfs_buf_get_uncached( _xfs_buf_free_pages(bp); fail_free_buf: xfs_buf_free_maps(bp); - kmem_zone_free(xfs_buf_zone, bp); + kmem_cache_free(xfs_buf_zone, bp); fail: return NULL; } @@ -1251,8 +1261,7 @@ xfs_buf_ioapply_map( int map, int *buf_offset, int *count, - int op, - int op_flags) + int op) { int page_index; int total_nr_pages = bp->b_page_count; @@ -1287,7 +1296,7 @@ next_chunk: bio->bi_iter.bi_sector = sector; bio->bi_end_io = xfs_buf_bio_end_io; bio->bi_private = bp; - bio_set_op_attrs(bio, op, op_flags); + bio->bi_opf = op; for (; size && nr_pages; nr_pages--, page_index++) { int rbytes, nbytes = PAGE_SIZE - offset; @@ -1332,7 +1341,6 @@ _xfs_buf_ioapply( { struct blk_plug plug; int op; - int op_flags = 0; int offset; int size; int i; @@ -1374,15 +1382,14 @@ _xfs_buf_ioapply( dump_stack(); } } - } else if (bp->b_flags & XBF_READ_AHEAD) { - op = REQ_OP_READ; - op_flags = REQ_RAHEAD; } else { op = REQ_OP_READ; + if (bp->b_flags & XBF_READ_AHEAD) + op |= REQ_RAHEAD; } /* we only use the buffer cache for meta-data */ - op_flags |= REQ_META; + op |= REQ_META; /* * Walk all the vectors issuing IO on them. Set up the initial offset @@ -1394,7 +1401,7 @@ _xfs_buf_ioapply( size = BBTOB(bp->b_length); blk_start_plug(&plug); for (i = 0; i < bp->b_map_count; i++) { - xfs_buf_ioapply_map(bp, i, &offset, &size, op, op_flags); + xfs_buf_ioapply_map(bp, i, &offset, &size, op); if (bp->b_error) break; if (size <= 0) @@ -2053,8 +2060,9 @@ xfs_buf_delwri_pushbuf( int __init xfs_buf_init(void) { - xfs_buf_zone = kmem_zone_init_flags(sizeof(xfs_buf_t), "xfs_buf", - KM_ZONE_HWALIGN, NULL); + xfs_buf_zone = kmem_cache_create("xfs_buf", + sizeof(struct xfs_buf), 0, + SLAB_HWCACHE_ALIGN, NULL); if (!xfs_buf_zone) goto out; @@ -2067,7 +2075,7 @@ xfs_buf_init(void) void xfs_buf_terminate(void) { - kmem_zone_destroy(xfs_buf_zone); + kmem_cache_destroy(xfs_buf_zone); } void xfs_buf_set_ref(struct xfs_buf *bp, int lru_ref) |
