diff options
Diffstat (limited to 'fs/btrfs/compression.h')
| -rw-r--r-- | fs/btrfs/compression.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h index df198623cc08..d34c4341eaf4 100644 --- a/fs/btrfs/compression.h +++ b/fs/btrfs/compression.h @@ -11,7 +11,9 @@ #include <linux/list.h> #include <linux/workqueue.h> #include <linux/wait.h> +#include <linux/pagemap.h> #include "bio.h" +#include "messages.h" struct address_space; struct page; @@ -73,11 +75,14 @@ struct compressed_bio { }; /* @range_end must be exclusive. */ -static inline u32 btrfs_calc_input_length(u64 range_end, u64 cur) +static inline u32 btrfs_calc_input_length(struct folio *folio, u64 range_end, u64 cur) { - u64 page_end = round_down(cur, PAGE_SIZE) + PAGE_SIZE; + const u64 folio_end = folio_pos(folio) + folio_size(folio); - return min(range_end, page_end) - cur; + /* @cur must be inside the folio. */ + ASSERT(folio_pos(folio) <= cur); + ASSERT(cur < folio_end); + return min(range_end, folio_end) - cur; } int __init btrfs_init_compress(void); |