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| author | Miklos Szeredi <mszeredi@suse.cz> | 2012-06-05 15:10:13 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-07-14 16:32:59 +0400 |
| commit | b6183df7b294997a748eeb9991daa126986ead12 (patch) | |
| tree | 7ddfc09b76beabfd7f69b6da7b60a65cbfe9c8d6 /fs/namei.c | |
| parent | 37d7fffc9cafe75ded8a840fa30ba625f99ed7ae (diff) | |
| download | linux-3.10-b6183df7b294997a748eeb9991daa126986ead12.tar.gz linux-3.10-b6183df7b294997a748eeb9991daa126986ead12.tar.bz2 linux-3.10-b6183df7b294997a748eeb9991daa126986ead12.zip | |
vfs: do_last(): separate O_CREAT specific code
Check O_CREAT on the slow lookup paths where necessary. This allows the rest to
be shared with plain open.
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.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/fs/namei.c b/fs/namei.c index 68742e3cb98..12ed29712b4 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2274,22 +2274,23 @@ static struct file *do_last(struct nameidata *nd, struct path *path, inode = path->dentry->d_inode; } goto finish_lookup; - } - - /* create side of things */ - /* - * This will *only* deal with leaving RCU mode - LOOKUP_JUMPED has been - * cleared when we got to the last component we are about to look up - */ - error = complete_walk(nd); - if (error) - return ERR_PTR(error); + } else { + /* create side of things */ + /* + * This will *only* deal with leaving RCU mode - LOOKUP_JUMPED + * has been cleared when we got to the last component we are + * about to look up + */ + error = complete_walk(nd); + if (error) + return ERR_PTR(error); - audit_inode(pathname, dir); - error = -EISDIR; - /* trailing slashes? */ - if (nd->last.name[nd->last.len]) - goto exit; + audit_inode(pathname, dir); + error = -EISDIR; + /* trailing slashes? */ + if (nd->last.name[nd->last.len]) + goto exit; + } retry_lookup: mutex_lock(&dir->d_inode->i_mutex); @@ -2305,7 +2306,7 @@ retry_lookup: path->mnt = nd->path.mnt; /* Negative dentry, just create the file */ - if (!dentry->d_inode) { + if (!dentry->d_inode && (open_flag & O_CREAT)) { umode_t mode = op->mode; if (!IS_POSIXACL(dir->d_inode)) mode &= ~current_umask(); |