提交 b19e6843 编写于 作者: D Dulshani Gunawardhana 提交者: Chris Mason

btrfs: Remove redundant local zero structure

Remove redundant local zero structure, replacing it by the kernel's
global ZERO_PAGE.
Signed-off-by: NDulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>
Reviewed-by: NZach Brown <zab@redhat.com>
Signed-off-by: NJosef Bacik <jbacik@fusionio.com>
Signed-off-by: NChris Mason <chris.mason@fusionio.com>
上级 3c45bfc1
......@@ -368,9 +368,8 @@ static noinline int btrfs_ioctl_fitrim(struct file *file, void __user *arg)
int btrfs_is_empty_uuid(u8 *uuid)
{
static char empty_uuid[BTRFS_UUID_SIZE] = {0};
return !memcmp(uuid, empty_uuid, BTRFS_UUID_SIZE);
BUILD_BUG_ON(BTRFS_UUID_SIZE > PAGE_SIZE);
return !memcmp(uuid, empty_zero_page, BTRFS_UUID_SIZE);
}
static noinline int create_subvol(struct inode *dir,
......
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