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authorMiklos Szeredi <mszeredi@suse.cz>2010-08-10 11:41:36 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2010-08-11 00:28:20 -0400
commitf7ad3c6be90809b53b7f0ae9d4eaa45ce2564a79 (patch)
treedc9b09188bab35320200f318b5e7b52f24dc43ad /fs/dcache.c
parent542ce7a9bc6b3838832ae0f4f8de30c667af8ff3 (diff)
downloadop-kernel-dev-f7ad3c6be90809b53b7f0ae9d4eaa45ce2564a79.zip
op-kernel-dev-f7ad3c6be90809b53b7f0ae9d4eaa45ce2564a79.tar.gz
vfs: add helpers to get root and pwd
Add three helpers that retrieve a refcounted copy of the root and cwd from the supplied fs_struct. get_fs_root() get_fs_pwd() get_fs_root_and_pwd() Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/dcache.c')
-rw-r--r--fs/dcache.c12
1 files changed, 2 insertions, 10 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index 9f2c134..995d080 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2014,10 +2014,7 @@ char *d_path(const struct path *path, char *buf, int buflen)
if (path->dentry->d_op && path->dentry->d_op->d_dname)
return path->dentry->d_op->d_dname(path->dentry, buf, buflen);
- read_lock(&current->fs->lock);
- root = current->fs->root;
- path_get(&root);
- read_unlock(&current->fs->lock);
+ get_fs_root(current->fs, &root);
spin_lock(&dcache_lock);
tmp = root;
res = __d_path(path, &tmp, buf, buflen);
@@ -2129,12 +2126,7 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size)
if (!page)
return -ENOMEM;
- read_lock(&current->fs->lock);
- pwd = current->fs->pwd;
- path_get(&pwd);
- root = current->fs->root;
- path_get(&root);
- read_unlock(&current->fs->lock);
+ get_fs_root_and_pwd(current->fs, &root, &pwd);
error = -ENOENT;
spin_lock(&dcache_lock);
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