diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/iomap.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/include/linux/iomap.h b/include/linux/iomap.h index eb0764945b42..90c27875e39d 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -353,12 +353,19 @@ sector_t iomap_bmap(struct address_space *mapping, sector_t bno, /* * Structure for writeback I/O completions. + * + * File systems implementing ->submit_ioend 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 { struct list_head io_list; /* next ioend in chain */ u16 io_flags; /* IOMAP_IOEND_* */ struct inode *io_inode; /* file being written to */ - size_t io_size; /* size of data within eof */ + size_t io_size; /* size of the extent */ + atomic_t io_remaining; /* completetion defer count */ + int io_error; /* stashed away status */ + struct iomap_ioend *io_parent; /* parent for completions */ loff_t io_offset; /* offset in the file */ sector_t io_sector; /* start sector of ioend */ struct bio io_bio; /* MUST BE LAST! */ @@ -408,6 +415,10 @@ struct iomap_writepage_ctx { u32 nr_folios; /* folios added to the ioend */ }; +struct iomap_ioend *iomap_init_ioend(struct inode *inode, struct bio *bio, + loff_t file_offset, u16 ioend_flags); +struct iomap_ioend *iomap_split_ioend(struct iomap_ioend *ioend, + unsigned int max_len, bool is_append); void iomap_finish_ioends(struct iomap_ioend *ioend, int error); void iomap_ioend_try_merge(struct iomap_ioend *ioend, struct list_head *more_ioends); @@ -479,4 +490,6 @@ int iomap_swapfile_activate(struct swap_info_struct *sis, # define iomap_swapfile_activate(sis, swapfile, pagespan, ops) (-EIO) #endif /* CONFIG_SWAP */ +extern struct bio_set iomap_ioend_bioset; + #endif /* LINUX_IOMAP_H */ |