diff options
Diffstat (limited to 'fs/btrfs/bio.h')
| -rw-r--r-- | fs/btrfs/bio.h | 51 |
1 files changed, 33 insertions, 18 deletions
diff --git a/fs/btrfs/bio.h b/fs/btrfs/bio.h index ca79decee060..1be74209f0b8 100644 --- a/fs/btrfs/bio.h +++ b/fs/btrfs/bio.h @@ -7,32 +7,30 @@ #ifndef BTRFS_BIO_H #define BTRFS_BIO_H +#include <linux/types.h> #include <linux/bio.h> #include <linux/workqueue.h> #include "tree-checker.h" struct btrfs_bio; struct btrfs_fs_info; +struct btrfs_inode; #define BTRFS_BIO_INLINE_CSUM_SIZE 64 -/* - * Maximum number of sectors for a single bio to limit the size of the - * checksum array. This matches the number of bio_vecs per bio and thus the - * I/O size for buffered I/O. - */ -#define BTRFS_MAX_BIO_SECTORS (256) - typedef void (*btrfs_bio_end_io_t)(struct btrfs_bio *bbio); /* * Highlevel btrfs I/O structure. It is allocated by btrfs_bio_alloc and - * passed to btrfs_submit_bio for mapping to the physical devices. + * passed to btrfs_submit_bbio() for mapping to the physical devices. */ struct btrfs_bio { /* * Inode and offset into it that this I/O operates on. - * Only set for data I/O. + * + * If the inode is a data one, csum verification and read-repair + * will be done automatically. + * If the inode is a metadata one, everything is handled by the caller. */ struct btrfs_inode *inode; u64 file_offset; @@ -40,7 +38,7 @@ struct btrfs_bio { union { /* * For data reads: checksumming and original I/O information. - * (for internal use in the btrfs_submit_bio machinery only) + * (for internal use in the btrfs_submit_bbio() machinery only) */ struct { u8 *csum; @@ -54,11 +52,16 @@ struct btrfs_bio { * - pointer to the checksums for this bio * - original physical address from the allocator * (for zone append only) + * - original logical address, used for checksumming fscrypt bios */ struct { struct btrfs_ordered_extent *ordered; struct btrfs_ordered_sum *sums; + struct work_struct csum_work; + struct completion csum_done; + struct bvec_iter csum_saved_iter; u64 orig_physical; + u64 orig_logical; }; /* For metadata reads: parentness verification. */ @@ -74,8 +77,20 @@ struct btrfs_bio { atomic_t pending_ios; struct work_struct end_io_work; - /* File system that this I/O operates on. */ - struct btrfs_fs_info *fs_info; + /* Save the first error status of split bio. */ + blk_status_t status; + + /* Use the commit root to look up csums (data read bio only). */ + bool csum_search_commit_root; + + /* + * Since scrub will reuse btree inode, we need this flag to distinguish + * scrub bios. + */ + bool is_scrub; + + /* Whether the csum generation for data write is async. */ + bool async_csum; /* * This member must come last, bio_alloc_bioset will allocate enough @@ -92,20 +107,20 @@ static inline struct btrfs_bio *btrfs_bio(struct bio *bio) int __init btrfs_bioset_init(void); void __cold btrfs_bioset_exit(void); -void btrfs_bio_init(struct btrfs_bio *bbio, struct btrfs_fs_info *fs_info, +void btrfs_bio_init(struct btrfs_bio *bbio, struct btrfs_inode *inode, u64 file_offset, btrfs_bio_end_io_t end_io, void *private); struct btrfs_bio *btrfs_bio_alloc(unsigned int nr_vecs, blk_opf_t opf, - struct btrfs_fs_info *fs_info, + struct btrfs_inode *inode, u64 file_offset, btrfs_bio_end_io_t end_io, void *private); void btrfs_bio_end_io(struct btrfs_bio *bbio, blk_status_t status); /* Submit using blkcg_punt_bio_submit. */ #define REQ_BTRFS_CGROUP_PUNT REQ_FS_PRIVATE -void btrfs_submit_bio(struct btrfs_bio *bbio, int mirror_num); +void btrfs_submit_bbio(struct btrfs_bio *bbio, int mirror_num); void btrfs_submit_repair_write(struct btrfs_bio *bbio, int mirror_num, bool dev_replace); -int btrfs_repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start, - u64 length, u64 logical, struct page *page, - unsigned int pg_offset, int mirror_num); +int btrfs_repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 fileoff, + u32 length, u64 logical, const phys_addr_t paddrs[], + unsigned int step, int mirror_num); #endif |