f2fs: check if swapfile is section-alligned

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If the swapfile isn't created by pin and fallocate, it can't be
guaranteed section-aligned, so it may be selected by f2fs gc. When
gc_pin_file_threshold is reached, the address of swapfile may change,
but won't be synchronized to swap_extent, so swap will write to wrong
address, which will cause data corruption.

Signed-off-by: Huang Jianan <huangjianan@oppo.com>
Signed-off-by: Guo Weichao <guoweichao@oppo.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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huangjianan@oppo.com 2021-03-01 12:58:44 +08:00 • committed by Jaegeuk Kim

parent 1da6610383

commit 36e4d95891

1 changed files with 88 additions and 21 deletions

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fs/f2fs/data.c

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