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| author | Harshad Shirwadkar <harshadshirwadkar@gmail.com> | 2021-05-20 00:59:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-10 14:39:26 +0300 |
| commit | fb86acc6236934e2b654f50d2a97fa77eac17859 (patch) | |
| tree | fff1a7a1271d0ac28c9c5712924e8cb17f16e54c /fs/ext4/fast_commit.h | |
| parent | d3b668b96ad3192c0581a248ae2f596cd054792a (diff) | |
| download | linux-fb86acc6236934e2b654f50d2a97fa77eac17859.tar.xz | |
ext4: fix fast commit alignment issues
commit a7ba36bc94f20b6c77f16364b9a23f582ea8faac upstream.
Fast commit recovery data on disk may not be aligned. So, when the
recovery code reads it, this patch makes sure that fast commit info
found on-disk is first memcpy-ed into an aligned variable before
accessing it. As a consequence of it, we also remove some macros that
could resulted in unaligned accesses.
Cc: stable@kernel.org
Fixes: 8016e29f4362 ("ext4: fast commit recovery path")
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Link: https://lore.kernel.org/r/20210519215920.2037527-1-harshads@google.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ext4/fast_commit.h')
| -rw-r--r-- | fs/ext4/fast_commit.h | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/fs/ext4/fast_commit.h b/fs/ext4/fast_commit.h index 3a6e5a1fa1b8..d8d0998a5c16 100644 --- a/fs/ext4/fast_commit.h +++ b/fs/ext4/fast_commit.h @@ -146,12 +146,5 @@ struct ext4_fc_replay_state { #define region_last(__region) (((__region)->lblk) + ((__region)->len) - 1) -#define fc_for_each_tl(__start, __end, __tl) \ - for (tl = (struct ext4_fc_tl *)start; \ - (u8 *)tl < (u8 *)end; \ - tl = (struct ext4_fc_tl *)((u8 *)tl + \ - sizeof(struct ext4_fc_tl) + \ - + le16_to_cpu(tl->fc_len))) - #endif /* __FAST_COMMIT_H__ */ |