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authorLinus Torvalds2020-03-06 14:56:46 -0600
committerLinus Torvalds2020-03-06 14:56:46 -0600
commit30fe0d07fd7b27d41d9b31a224052cc4e910947a (patch)
tree7071e08a50a117975e5ac0184af0e4edcefd9d5c /fs/btrfs
parent0b25d458035d0ca6502e678874e2ccb2fa2ddc23 (diff)
parente7a04894c766daa4248cb736efee93550f2d5872 (diff)
Merge tag 'for-5.6-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fix from David Sterba: "One fixup for DIO when in use with the new checksums, a missed case where the checksum size was still assuming u32" * tag 'for-5.6-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: fix RAID direct I/O reads with alternate csums
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/inode.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 1ccb3f8d528d..27076ebadb36 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7783,6 +7783,7 @@ static inline blk_status_t btrfs_lookup_and_bind_dio_csum(struct inode *inode,
{
struct btrfs_io_bio *io_bio = btrfs_io_bio(bio);
struct btrfs_io_bio *orig_io_bio = btrfs_io_bio(dip->orig_bio);
+ u16 csum_size;
blk_status_t ret;
/*
@@ -7802,7 +7803,8 @@ static inline blk_status_t btrfs_lookup_and_bind_dio_csum(struct inode *inode,
file_offset -= dip->logical_offset;
file_offset >>= inode->i_sb->s_blocksize_bits;
- io_bio->csum = (u8 *)(((u32 *)orig_io_bio->csum) + file_offset);
+ csum_size = btrfs_super_csum_size(btrfs_sb(inode->i_sb)->super_copy);
+ io_bio->csum = orig_io_bio->csum + csum_size * file_offset;
return 0;
}