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Introduce path_put()

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* Add path_put() functions for releasing a reference to the dentry and
  vfsmount of a struct path in the right order

* Switch from path_release(nd) to path_put(&nd->path)

* Rename dput_path() to path_put_conditional()

[akpm@linux-foundation.org: fix cifs]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Steven French <sfrench@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jan Blunck
2008-02-14 19:34:35 -08:00
committed by Linus Torvalds
parent 4ac9137858
commit 1d957f9bf8
41 changed files with 125 additions and 118 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
fs/open.c
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@@ -130,7 +130,7 @@ asmlinkage long sys_statfs(const char __user * path, struct statfs __user * buf)
error = vfs_statfs_native(nd.path.dentry, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
path_release(&nd);
path_put(&nd.path);
}
return error;
}
@@ -149,7 +149,7 @@ asmlinkage long sys_statfs64(const char __user *path, size_t sz, struct statfs64
error = vfs_statfs64(nd.path.dentry, &tmp);
if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
error = -EFAULT;
path_release(&nd);
path_put(&nd.path);
}
return error;
}
@@ -277,7 +277,7 @@ static long do_sys_truncate(const char __user * path, loff_t length)
put_write_and_out:
put_write_access(inode);
dput_and_out:
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@@ -462,7 +462,7 @@ asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
res = -EROFS;
out_path_release:
path_release(&nd);
path_put(&nd.path);
out:
current->fsuid = old_fsuid;
current->fsgid = old_fsgid;
@@ -493,7 +493,7 @@ asmlinkage long sys_chdir(const char __user * filename)
set_fs_pwd(current->fs, nd.path.mnt, nd.path.dentry);
dput_and_out:
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@@ -549,7 +549,7 @@ asmlinkage long sys_chroot(const char __user * filename)
set_fs_altroot();
error = 0;
dput_and_out:
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@@ -621,7 +621,7 @@ asmlinkage long sys_fchmodat(int dfd, const char __user *filename,
mutex_unlock(&inode->i_mutex);
dput_and_out:
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@@ -676,7 +676,7 @@ asmlinkage long sys_chown(const char __user * filename, uid_t user, gid_t group)
if (error)
goto out;
error = chown_common(nd.path.dentry, user, group);
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@@ -696,7 +696,7 @@ asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
if (error)
goto out;
error = chown_common(nd.path.dentry, user, group);
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@@ -710,7 +710,7 @@ asmlinkage long sys_lchown(const char __user * filename, uid_t user, gid_t group
if (error)
goto out;
error = chown_common(nd.path.dentry, user, group);
path_release(&nd);
path_put(&nd.path);
out:
return error;
}
@@ -894,7 +894,7 @@ struct file *nameidata_to_filp(struct nameidata *nd, int flags)
filp = __dentry_open(nd->path.dentry, nd->path.mnt, flags, filp,
NULL);
else
path_release(nd);
path_put(&nd->path);
return filp;
}