Commit 5cb502f4 authored Jul 13, 2020 by Qu Wenruo Committed by David Sterba Jul 27, 2020

btrfs: relocation: allow signal to cancel balance



Although btrfs balance can be canceled with "btrfs balance cancel"
command, it's still almost muscle memory to press Ctrl-C to cancel a
long running btrfs balance.

So allow btrfs balance to check signal to determine if it should exit.
The cancellation points are in known location and we're only adding one
more reason, so this should be safe.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

parent 813f8a0e

fs/btrfs/relocation.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -2656,7 +2656,8 @@ int setup_extent_mapping(struct inode *inode, u64 start, u64 end,
		*/
		int btrfs_should_cancel_balance(struct btrfs_fs_info *fs_info)
		{
		return atomic_read(&fs_info->balance_cancel_req);
		return atomic_read(&fs_info->balance_cancel_req) \|\|
		fatal_signal_pending(current);
		}
		ALLOW_ERROR_INJECTION(btrfs_should_cancel_balance, TRUE);

Admin message