diff options
| author | Qu Wenruo <wqu@suse.com> | 2021-05-03 10:08:54 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2021-06-21 15:19:05 +0200 |
| commit | 08508fea07cdf6f62e61bae85d3af55433a16f98 (patch) | |
| tree | 3cc939cf768fd77e62ffa8a2cc73fae2179f0131 /fs/btrfs/ctree.h | |
| parent | f4dcfb30452631f7f308c144e1fd4d8a6ad7111b (diff) | |
btrfs: make btrfs_verify_data_csum() to return a bitmap
This will provide the basis for later per-sector repair for subpage,
while still keeping the existing code happy.
As if all csums match, the return value will be 0, same as now.
Only when csum mismatches, the return value is different.
The new return value will be a bitmap, for 4K sectorsize and 4K page
size, it will be either 1, instead of the -EIO (which is not used
directly by the callers, no effective change).
But for 4K sectorsize and 64K page size, aka subpage case, since the
bvec can contain multiple sectors, knowing which sectors are corrupted
will allow us to submit repair only for corrupted sectors.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 9fb76829a281..938d8ebf4cf3 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -3100,8 +3100,8 @@ u64 btrfs_file_extent_end(const struct btrfs_path *path); /* inode.c */ blk_status_t btrfs_submit_data_bio(struct inode *inode, struct bio *bio, int mirror_num, unsigned long bio_flags); -int btrfs_verify_data_csum(struct btrfs_io_bio *io_bio, u32 bio_offset, - struct page *page, u64 start, u64 end); +unsigned int btrfs_verify_data_csum(struct btrfs_io_bio *io_bio, u32 bio_offset, + struct page *page, u64 start, u64 end); struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode, u64 start, u64 len); noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |