Commit 2fad4e83 authored Jul 23, 2014 by David Sterba Committed by Chris Mason Sep 17, 2014

btrfs: wake up transaction thread from SYNC_FS ioctl



The transaction thread may want to do more work, namely it pokes the
cleaner ktread that will start processing uncleaned subvols.

This can be triggered by user via the 'btrfs fi sync' command, otherwise
there was a delay up to 30 seconds before the cleaner started to clean
old snapshots.

Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>

parent c01a5c07

fs/btrfs/ioctl.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -5288,6 +5288,12 @@ long btrfs_ioctl(struct file *file, unsigned int
		if (ret)
		return ret;
		ret = btrfs_sync_fs(file->f_dentry->d_sb, 1);
		/*
		* The transaction thread may want to do more work,
		* namely it pokes the cleaner ktread that will start
		* processing uncleaned subvols.
		*/
		wake_up_process(root->fs_info->transaction_kthread);
		return ret;
		}
		case BTRFS_IOC_START_SYNC:

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