diff options
Diffstat (limited to 'include/linux/iomap.h')
| -rw-r--r-- | include/linux/iomap.h | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/include/linux/iomap.h b/include/linux/iomap.h index 625d7911a2b5..9f32dd8dc075 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -391,8 +391,7 @@ sector_t iomap_bmap(struct address_space *mapping, sector_t bno, /* * Structure for writeback I/O completions. * - * File systems implementing ->submit_ioend (for buffered I/O) or ->submit_io - * for direct I/O) can split a bio generated by iomap. In that case the parent + * File systems can split a bio generated by iomap. In that case the parent * ioend it was split from is recorded in ioend->io_parent. */ struct iomap_ioend { @@ -416,7 +415,7 @@ static inline struct iomap_ioend *iomap_ioend_from_bio(struct bio *bio) struct iomap_writeback_ops { /* - * Required, performs writeback on the passed in range + * Performs writeback on the passed in range * * Can map arbitrarily large regions, but we need to call into it at * least once per folio to allow the file systems to synchronize with @@ -432,23 +431,22 @@ struct iomap_writeback_ops { u64 end_pos); /* - * Optional, allows the file systems to hook into bio submission, - * including overriding the bi_end_io handler. + * Submit a writeback context previously build up by ->writeback_range. * - * Returns 0 if the bio was successfully submitted, or a negative - * error code if status was non-zero or another error happened and - * the bio could not be submitted. + * Returns 0 if the context was successfully submitted, or a negative + * error code if not. If @error is non-zero a failure occurred, and + * the writeback context should be completed with an error. */ - int (*submit_ioend)(struct iomap_writepage_ctx *wpc, int status); + int (*writeback_submit)(struct iomap_writepage_ctx *wpc, int error); }; struct iomap_writepage_ctx { struct iomap iomap; struct inode *inode; struct writeback_control *wbc; - struct iomap_ioend *ioend; const struct iomap_writeback_ops *ops; u32 nr_folios; /* folios added to the ioend */ + void *wb_ctx; /* pending writeback context */ }; struct iomap_ioend *iomap_init_ioend(struct inode *inode, struct bio *bio, @@ -461,6 +459,7 @@ void iomap_ioend_try_merge(struct iomap_ioend *ioend, void iomap_sort_ioends(struct list_head *ioend_list); ssize_t iomap_add_to_ioend(struct iomap_writepage_ctx *wpc, struct folio *folio, loff_t pos, loff_t end_pos, unsigned int dirty_len); +int iomap_ioend_writeback_submit(struct iomap_writepage_ctx *wpc, int error); int iomap_writepages(struct iomap_writepage_ctx *wpc); |