Commit 2adada88 authored by Johannes Thumshirn's avatar Johannes Thumshirn Committed by David Sterba
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btrfs: check for relocation inodes on zoned btrfs in should_nocow 



Prepare for allowing preallocation for relocation inodes.

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 e6d261e3

fs/btrfs/inode.c

+9 −1
Original line number Diff line number Diff line
@@ -1944,7 +1944,15 @@ int btrfs_run_delalloc_range(struct btrfs_inode *inode, struct page *locked_page 
	const bool zoned = btrfs_is_zoned(inode->root->fs_info);



	if (should_nocow(inode, start, end)) {

		ASSERT(!zoned);

		/*

		 * Normally on a zoned device we're only doing COW writes, but

		 * in case of relocation on a zoned filesystem we have taken

		 * precaution, that we're only writing sequentially. It's safe

		 * to use run_delalloc_nocow() here, like for  regular

		 * preallocated inodes.

		 */

		ASSERT(!zoned ||

		       (zoned && btrfs_is_data_reloc_root(inode->root)));

		ret = run_delalloc_nocow(inode, locked_page, start, end,

					 page_started, nr_written);

	} else if (!inode_can_compress(inode) ||