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| author | Al Viro <viro@zeniv.linux.org.uk> | 2011-07-16 21:38:06 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-07-20 20:48:00 -0400 |
| commit | 2fbe8c8ad176db69dfc682b4abb721c8fc19c3fd (patch) | |
| tree | f473a370543927ec2ebf1a462d165fc08c1515d3 /fs | |
| parent | 02c24a82187d5a628c68edfe71ae60dc135cd178 (diff) | |
| download | kernel-common-2fbe8c8ad176db69dfc682b4abb721c8fc19c3fd.tar.gz kernel-common-2fbe8c8ad176db69dfc682b4abb721c8fc19c3fd.tar.bz2 kernel-common-2fbe8c8ad176db69dfc682b4abb721c8fc19c3fd.zip | |
get rid of useless dget_parent() in fs/btrfs/ioctl.c
both callers there have dentry->d_parent stabilized by the fact that
their caller had obtained dentry from lookup_one_len() and had not
dropped ->i_mutex on parent since then.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/ioctl.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index a3c4751e07db..622543309eb2 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -323,7 +323,7 @@ static noinline int create_subvol(struct btrfs_root *root, struct btrfs_inode_item *inode_item; struct extent_buffer *leaf; struct btrfs_root *new_root; - struct dentry *parent = dget_parent(dentry); + struct dentry *parent = dentry->d_parent; struct inode *dir; int ret; int err; @@ -332,10 +332,8 @@ static noinline int create_subvol(struct btrfs_root *root, u64 index = 0; ret = btrfs_find_free_objectid(root->fs_info->tree_root, &objectid); - if (ret) { - dput(parent); + if (ret) return ret; - } dir = parent->d_inode; @@ -346,10 +344,8 @@ static noinline int create_subvol(struct btrfs_root *root, * 2 - dir items */ trans = btrfs_start_transaction(root, 6); - if (IS_ERR(trans)) { - dput(parent); + if (IS_ERR(trans)) return PTR_ERR(trans); - } leaf = btrfs_alloc_free_block(trans, root, root->leafsize, 0, objectid, NULL, 0, 0, 0); @@ -439,7 +435,6 @@ static noinline int create_subvol(struct btrfs_root *root, d_instantiate(dentry, btrfs_lookup_dentry(dir, dentry)); fail: - dput(parent); if (async_transid) { *async_transid = trans->transid; err = btrfs_commit_transaction_async(trans, root, 1); @@ -456,7 +451,6 @@ static int create_snapshot(struct btrfs_root *root, struct dentry *dentry, bool readonly) { struct inode *inode; - struct dentry *parent; struct btrfs_pending_snapshot *pending_snapshot; struct btrfs_trans_handle *trans; int ret; @@ -504,9 +498,7 @@ static int create_snapshot(struct btrfs_root *root, struct dentry *dentry, if (ret) goto fail; - parent = dget_parent(dentry); - inode = btrfs_lookup_dentry(parent->d_inode, dentry); - dput(parent); + inode = btrfs_lookup_dentry(dentry->d_parent->d_inode, dentry); if (IS_ERR(inode)) { ret = PTR_ERR(inode); goto fail; |