f2fs: avoid to issue redundant discard commands
If segs_per_sec is over 1 like under SMR, previously f2fs issues discard
commands redundantly on the same section, since we didn't move end position
for the previous discard command.
E.g.,
start end
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prefree_bitmap = [01111100111100]
And, after issue discard for this section,
end start
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prefree_bitmap = [01111100111100]
Select this section again by searching from (end + 1),
start end
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prefree_bitmap = [01111100111100]
Fixes: 36abef4e79
("f2fs: introduce mode=lfs mount option")
Cc: <stable@vger.kernel.org>
Cc: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
parent
37e79cd31c
commit
8b107f5b97
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@ -1036,6 +1036,8 @@ next:
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start = start_segno + sbi->segs_per_sec;
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if (start < end)
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goto next;
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else
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end = start - 1;
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}
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mutex_unlock(&dirty_i->seglist_lock);
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