evie/android_kernel_oneplus_msm8998
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f2fs: do not set free of current section

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[ Upstream commit 3611ce9911267cb93d364bd71ddea6821278d11f ]

For the case when sbi->segs_per_sec > 1, take section:segment = 5 for
example, if segment 1 is just used and allocate new segment 2, and the
blocks of segment 1 is invalidated, at this time, the previous code will
use __set_test_and_free to free the free_secmap and free_sections++,
this is not correct since it is still a current section, so fix it.

Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yunlong Song 2018-07-12 23:09:26 +08:00 • committed by Greg Kroah-Hartman
parent 0a93d88d66
commit f5be08ed5e
1 changed files with 3 additions and 0 deletions
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3
fs/f2fs/segment.h
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@ -381,6 +381,8 @@ static inline void __set_test_and_free(struct f2fs_sb_info *sbi,
if (test_and_clear_bit(segno, free_i->free_segmap)) { if (test_and_clear_bit(segno, free_i->free_segmap)) {
free_i->free_segments++; free_i->free_segments++;
if (IS_CURSEC(sbi, secno))
goto skip_free;
next = find_next_bit(free_i->free_segmap, next = find_next_bit(free_i->free_segmap,
start_segno + sbi->segs_per_sec, start_segno); start_segno + sbi->segs_per_sec, start_segno);
if (next >= start_segno + sbi->segs_per_sec) { if (next >= start_segno + sbi->segs_per_sec) {
@ -388,6 +390,7 @@ static inline void __set_test_and_free(struct f2fs_sb_info *sbi,
free_i->free_sections++; free_i->free_sections++;
} }
} }
skip_free:
spin_unlock(&free_i->segmap_lock); spin_unlock(&free_i->segmap_lock);
} }