Commit f12eec9a authored Sep 01, 2022 by Filipe Manana Committed by David Sterba Sep 26, 2022

btrfs: remove check for impossible block start for an extent map at fiemap



During fiemap we are testing if an extent map has a block start with a
value of EXTENT_MAP_LAST_BYTE, but that is never set on an extent map,
and never was according to git history. So remove that useless check.

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

parent b6e83356

fs/btrfs/extent_io.c

+1 −4

Original line number	Diff line number	Diff line
		@@ -5571,10 +5571,7 @@ int extent_fiemap(struct btrfs_inode inode, struct fiemap_extent_info fieinfo,
		if (off >= max)
		end = 1;

		if (em->block_start == EXTENT_MAP_LAST_BYTE) {
		end = 1;
		flags \|= FIEMAP_EXTENT_LAST;
		} else if (em->block_start == EXTENT_MAP_INLINE) {
		if (em->block_start == EXTENT_MAP_INLINE) {
		flags \|= (FIEMAP_EXTENT_DATA_INLINE \|
		FIEMAP_EXTENT_NOT_ALIGNED);
		} else if (em->block_start == EXTENT_MAP_DELALLOC) {