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Commit 0e469fca authored by Jaegeuk Kim's avatar Jaegeuk Kim Committed by Jaegeuk Kim
Browse files

FROMLIST: f2fs: run fstrim asynchronously if runtime discard is on 



Cherry-picked from:
        origin/upstream-f2fs-stable-linux-3.18.y

We don't need to wait for whole bunch of discard candidates in fstrim, since
runtime discard will issue them in idle time.

Change-Id: I7dab8241370ccbb2222a513fadc50d1b479b32c2
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 17d80831

fs/f2fs/segment.c

+11 −2
Original line number Diff line number Diff line
@@ -2520,9 +2520,18 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) 


	__init_discard_policy(sbi, &dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen);

	__issue_discard_cmd_range(sbi, &dpolicy, start_block, end_block);



	/*

	 * We filed discard candidates, but actually we don't need to wait for

	 * all of them, since they'll be issued in idle time along with runtime

	 * discard option. User configuration looks like using runtime discard

	 * or periodic fstrim instead of it.

	 */

	if (!test_opt(sbi, DISCARD)) {

		trimmed = __wait_discard_cmd_range(sbi, &dpolicy,

					start_block, end_block);

		range->len = F2FS_BLK_TO_BYTES(trimmed);

	}

out:

	return err;

}