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| author | Miklos Szeredi <mszeredi@suse.cz> | 2008-05-12 14:02:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-13 08:02:23 -0700 |
| commit | 8dc4e37362a5dc910d704d52ac6542bfd49ddc2f (patch) | |
| tree | 22f9a2e074a7718c90747bc0458845f54468d4fc /fs/ecryptfs | |
| parent | 64d032ba434ad41586460811148f01511e5612f9 (diff) | |
| download | lwn-8dc4e37362a5dc910d704d52ac6542bfd49ddc2f.tar.gz lwn-8dc4e37362a5dc910d704d52ac6542bfd49ddc2f.zip | |
ecryptfs: clean up (un)lock_parent
dget(dentry->d_parent) --> dget_parent(dentry)
unlock_parent() is racy and unnecessary. Replace single caller with
unlock_dir().
There are several other suspect uses of ->d_parent in ecryptfs...
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ecryptfs')
| -rw-r--r-- | fs/ecryptfs/inode.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index 0a1397335a8e..c92cc1c00aae 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -37,17 +37,11 @@ static struct dentry *lock_parent(struct dentry *dentry) { struct dentry *dir; - dir = dget(dentry->d_parent); + dir = dget_parent(dentry); mutex_lock_nested(&(dir->d_inode->i_mutex), I_MUTEX_PARENT); return dir; } -static void unlock_parent(struct dentry *dentry) -{ - mutex_unlock(&(dentry->d_parent->d_inode->i_mutex)); - dput(dentry->d_parent); -} - static void unlock_dir(struct dentry *dir) { mutex_unlock(&dir->d_inode->i_mutex); @@ -426,8 +420,9 @@ static int ecryptfs_unlink(struct inode *dir, struct dentry *dentry) int rc = 0; struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry); struct inode *lower_dir_inode = ecryptfs_inode_to_lower(dir); + struct dentry *lower_dir_dentry; - lock_parent(lower_dentry); + lower_dir_dentry = lock_parent(lower_dentry); rc = vfs_unlink(lower_dir_inode, lower_dentry); if (rc) { printk(KERN_ERR "Error in vfs_unlink; rc = [%d]\n", rc); @@ -439,7 +434,7 @@ static int ecryptfs_unlink(struct inode *dir, struct dentry *dentry) dentry->d_inode->i_ctime = dir->i_ctime; d_drop(dentry); out_unlock: - unlock_parent(lower_dentry); + unlock_dir(lower_dir_dentry); return rc; } |