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Commit a29d0e0b authored by Yunlei He's avatar Yunlei He Committed by Jaegeuk Kim
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f2fs: skip writeback meta pages if cp_mutex acquire failed 



Skip writeback meta pages if cp_mutex lock acquire failed, cp will
flush dirty pages instead.

Signed-off-by: default avatarYunlei He <heyunlei@huawei.com>
Reviewed-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 5ce4738a

fs/f2fs/checkpoint.c

+4 −3
Original line number Original line Diff line number Diff line
@@ -275,10 +275,11 @@ static int f2fs_write_meta_pages(struct address_space *mapping, 
		get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META))

		get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META))

		goto skip_write;

		goto skip_write;





	trace_f2fs_writepages(mapping->host, wbc, META);

	/* if locked failed, cp will flush dirty pages instead */

	if (!mutex_trylock(&sbi->cp_mutex))

		goto skip_write;





	/* if mounting is failed, skip writing node pages */

	trace_f2fs_writepages(mapping->host, wbc, META);

	mutex_lock(&sbi->cp_mutex);

	diff = nr_pages_to_write(sbi, META, wbc);

	diff = nr_pages_to_write(sbi, META, wbc);

	written = sync_meta_pages(sbi, META, wbc->nr_to_write);

	written = sync_meta_pages(sbi, META, wbc->nr_to_write);

	mutex_unlock(&sbi->cp_mutex);

	mutex_unlock(&sbi->cp_mutex);