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| author | Zhang Yi <[email protected]> | 2025-02-17 06:59:55 +0000 |
|---|---|---|
| committer | Theodore Ts'o <[email protected]> | 2025-03-18 04:15:25 +0000 |
| commit | 18aba2adb3e2a676fff0d81e51f5045f3c636666 (patch) | |
| tree | 96a617fef375252735424cc3ee6146d7c81832d1 /drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c | |
| parent | ext4: remove references to bh->b_page (diff) | |
| download | kernel-18aba2adb3e2a676fff0d81e51f5045f3c636666.tar.gz kernel-18aba2adb3e2a676fff0d81e51f5045f3c636666.zip | |
jbd2: fix off-by-one while erasing journal
In __jbd2_journal_erase(), the block_stop parameter includes the last
block of a contiguous region; however, the calculation of byte_stop is
incorrect, as it does not account for the bytes in that last block.
Consequently, the page cache is not cleared properly, which occasionally
causes the ext4/050 test to fail.
Since block_stop operates on inclusion semantics, it involves repeated
increments and decrements by 1, significantly increasing the complexity
of the calculations. Optimize the calculation and fix the incorrect
byte_stop by make both block_stop and byte_stop to use exclusion
semantics.
This fixes a failure in fstests ext4/050.
Fixes: 01d5d96542fd ("ext4: add discard/zeroout flags to journal flush")
Signed-off-by: Zhang Yi <[email protected]>
Reviewed-by: Baokun Li <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Theodore Ts'o <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c')
0 files changed, 0 insertions, 0 deletions