Commit 49547068 authored by David Sterba's avatar David Sterba
Browse files

btrfs: document byte swap optimization of root_item::flags accessors 



Reviewed-by: default avatarAnand Jain <anand.jain@oracle.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 7735cd75

fs/btrfs/ctree.h

+2 −0
Original line number Diff line number Diff line
@@ -2216,11 +2216,13 @@ BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, 


static inline bool btrfs_root_readonly(const struct btrfs_root *root)

{

	/* Byte-swap the constant at compile time, root_item::flags is LE */

	return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0;

}



static inline bool btrfs_root_dead(const struct btrfs_root *root)

{

	/* Byte-swap the constant at compile time, root_item::flags is LE */

	return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_DEAD)) != 0;

}