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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/namei.c
parent542ce7a9bc6b3838832ae0f4f8de30c667af8ff3 (diff)
downloadlinux-f7ad3c6be90809b53b7f0ae9d4eaa45ce2564a79.tar.bz2
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/namei.c')
-rw-r--r--fs/namei.c15
1 files changed, 3 insertions, 12 deletions
diff --git a/fs/namei.c b/fs/namei.c
index 13ff4abdbdca..17ea76bf2fbe 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -483,13 +483,8 @@ ok:
static __always_inline void set_root(struct nameidata *nd)
{
- if (!nd->root.mnt) {
- struct fs_struct *fs = current->fs;
- read_lock(&fs->lock);
- nd->root = fs->root;
- path_get(&nd->root);
- read_unlock(&fs->lock);
- }
+ if (!nd->root.mnt)
+ get_fs_root(current->fs, &nd->root);
}
static int link_path_walk(const char *, struct nameidata *);
@@ -1015,11 +1010,7 @@ static int path_init(int dfd, const char *name, unsigned int flags, struct namei
nd->path = nd->root;
path_get(&nd->root);
} else if (dfd == AT_FDCWD) {
- struct fs_struct *fs = current->fs;
- read_lock(&fs->lock);
- nd->path = fs->pwd;
- path_get(&fs->pwd);
- read_unlock(&fs->lock);
+ get_fs_pwd(current->fs, &nd->path);
} else {
struct dentry *dentry;