f2fs: stop checkpoint when get a out-of-bounds segment

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There is low probability that an out-of-bounds segment will be got
on a small-capacity device. In order to prevent subsequent write requests
allocating block address from this invalid segment, which may cause
unexpected issue, stop checkpoint should be performed.

Also introduce a new stop cp reason: STOP_CP_REASON_NO_SEGMENT.

Note, f2fs_stop_checkpoint(, false) is complex and it may sleep, so we should
move it outside segmap_lock spinlock coverage in get_new_segment().

Signed-off-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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Zhiguo Niu 2024-02-20 14:11:24 +08:00 • committed by Jaegeuk Kim

parent e24e8333d0

commit f9e28904e6

2 changed files with 12 additions and 1 deletions

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12

fs/f2fs/segment.c

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1

include/linux/f2fs_fs.h

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