Commit fdf9a37d authored by Christoph Hellwig's avatar Christoph Hellwig Committed by David Sterba
Browse files

btrfs: never return true for reads in btrfs_use_zone_append 



Using Zone Append only makes sense for writes to the device, so check
that in btrfs_use_zone_append.  This avoids the possibility of
artificially limited read size on zoned file systems.

Reviewed-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 921603c7

fs/btrfs/zoned.c

+3 −0
Original line number Diff line number Diff line
@@ -1641,6 +1641,9 @@ bool btrfs_use_zone_append(struct btrfs_bio *bbio) 
	if (!is_data_inode(&inode->vfs_inode))

		return false;



	if (btrfs_op(&bbio->bio) != BTRFS_MAP_WRITE)

		return false;



	/*

	 * Using REQ_OP_ZONE_APPNED for relocation can break assumptions on the

	 * extent layout the relocation code has.