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authorDulshani Gunawardhana <dulshani.gunawardhana89@gmail.com>2013-10-31 10:29:38 +0530
committerChris Mason <chris.mason@fusionio.com>2013-11-11 22:11:39 -0500
commitb19e684393752ec129a36924e6c270daf79676d6 (patch)
tree119044cd2bc3f3202fcc1810e53838b09601568e /fs/btrfs
parent3c45bfc1528ccb8b94c06d5740854bb75f8a92fb (diff)
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btrfs: Remove redundant local zero structure
Remove redundant local zero structure, replacing it by the kernel's global ZERO_PAGE. Signed-off-by: Dulshani Gunawardhana <dulshani.gunawardhana89@gmail.com> Reviewed-by: Zach Brown <zab@redhat.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/ioctl.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 9ea05506cb84..78d20482b72a 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -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,