Commit 58cce381 authored by Yunlei He's avatar Yunlei He Committed by Jaegeuk Kim
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f2fs: skip new checkpoint when doing fstrim without fs change 



This patch enables to do fstrim without checkpoint, if there is no fs
change.

Signed-off-by: default avatarYunlei He <heyunlei@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent f83a2584

fs/f2fs/checkpoint.c

+11 −0
Original line number Diff line number Diff line
@@ -1190,6 +1190,17 @@ int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) 


	f2fs_flush_merged_bios(sbi);



	/* this is the case of multiple fstrims without any changes */

	if (cpc->reason == CP_DISCARD && !is_sbi_flag_set(sbi, SBI_IS_DIRTY)) {

		f2fs_bug_on(sbi, NM_I(sbi)->dirty_nat_cnt);

		f2fs_bug_on(sbi, SIT_I(sbi)->dirty_sentries);

		f2fs_bug_on(sbi, prefree_segments(sbi));

		flush_sit_entries(sbi, cpc);

		clear_prefree_segments(sbi, cpc);

		unblock_operations(sbi);

		goto out;

	}



	/*

	 * update checkpoint pack index

	 * Increase the version number so that