Commit e6d261e3 authored by Johannes Thumshirn's avatar Johannes Thumshirn Committed by David Sterba
Browse files

btrfs: zoned: use regular writes for relocation 



Now that we have a dedicated block group for relocation, we can use
REQ_OP_WRITE instead of  REQ_OP_ZONE_APPEND for writing out the data on
relocation.

Reviewed-by: default avatarNaohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 35156d85

fs/btrfs/zoned.c

+11 −0
Original line number Diff line number Diff line
@@ -1490,6 +1490,17 @@ bool btrfs_use_zone_append(struct btrfs_inode *inode, u64 start) 
	if (!is_data_inode(&inode->vfs_inode))

		return false;



	/*

	 * Using REQ_OP_ZONE_APPNED for relocation can break assumptions on the

	 * extent layout the relocation code has.

	 * Furthermore we have set aside own block-group from which only the

	 * relocation "process" can allocate and make sure only one process at a

	 * time can add pages to an extent that gets relocated, so it's safe to

	 * use regular REQ_OP_WRITE for this special case.

	 */

	if (btrfs_is_data_reloc_root(inode->root))

		return false;



	cache = btrfs_lookup_block_group(fs_info, start);

	ASSERT(cache);

	if (!cache)