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btrfs: use GFP_KERNEL in create_snapshot 

We don't need to use GFP_NOFS here as this is called from ioctls an the
only lock held is the subvol_sem, which is of a high level and protects
creation/renames/deletion and is never held in the writeout paths.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2017-02-13 11:03:44 +01:00
parent 1af4a0aaa5
commit 23269bf5ea
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/ioctl.c
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@ -670,12 +670,12 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir,
if (!test_bit(BTRFS_ROOT_REF_COWS, &root->state)) if (!test_bit(BTRFS_ROOT_REF_COWS, &root->state))
return -EINVAL; return -EINVAL;
pending_snapshot = kzalloc(sizeof(*pending_snapshot), GFP_NOFS); pending_snapshot = kzalloc(sizeof(*pending_snapshot), GFP_KERNEL);
if (!pending_snapshot) if (!pending_snapshot)
return -ENOMEM; return -ENOMEM;
pending_snapshot->root_item = kzalloc(sizeof(struct btrfs_root_item), pending_snapshot->root_item = kzalloc(sizeof(struct btrfs_root_item),
GFP_NOFS); GFP_KERNEL);
pending_snapshot->path = btrfs_alloc_path(); pending_snapshot->path = btrfs_alloc_path();
if (!pending_snapshot->root_item || !pending_snapshot->path) { if (!pending_snapshot->root_item || !pending_snapshot->path) {
ret = -ENOMEM; ret = -ENOMEM;