diff options
Diffstat (limited to 'fs/btrfs/compression.c')
| -rw-r--r-- | fs/btrfs/compression.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 19b22b4653c8..1cd15d6a9c49 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -163,12 +163,26 @@ static int compression_decompress(int type, struct list_head *ws, static void btrfs_free_compressed_pages(struct compressed_bio *cb) { for (unsigned int i = 0; i < cb->nr_pages; i++) - put_page(cb->compressed_pages[i]); + btrfs_free_compr_page(cb->compressed_pages[i]); kfree(cb->compressed_pages); } static int btrfs_decompress_bio(struct compressed_bio *cb); +/* + * Common wrappers for page allocation from compression wrappers + */ +struct page *btrfs_alloc_compr_page(void) +{ + return alloc_page(GFP_NOFS); +} + +void btrfs_free_compr_page(struct page *page) +{ + ASSERT(page_ref_count(page) == 1); + put_page(page); +} + static void end_compressed_bio_read(struct btrfs_bio *bbio) { struct compressed_bio *cb = to_compressed_bio(bbio); |