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| author | Al Viro <viro@zeniv.linux.org.uk> | 2015-05-07 19:54:34 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-05-11 08:13:10 -0400 |
| commit | 181548c05147154605711f3b1cf863267b5b8f7a (patch) | |
| tree | 3ad257729f93be22cd934db4ff1bf8803345839c /fs/namei.c | |
| parent | 63afdfc781e10c6b3ec38274e6163422876caa9a (diff) | |
| download | lwn-181548c05147154605711f3b1cf863267b5b8f7a.tar.gz lwn-181548c05147154605711f3b1cf863267b5b8f7a.zip | |
namei: pick_link() callers already have inode
no need to refetch (and once we move unlazy out of there, recheck ->d_seq).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/fs/namei.c b/fs/namei.c index bcacb3100317..33b655de0ec0 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1545,7 +1545,8 @@ static void terminate_walk(struct nameidata *nd) put_link(nd); } -static int pick_link(struct nameidata *nd, struct path *link, unsigned seq) +static int pick_link(struct nameidata *nd, struct path *link, + struct inode *inode, unsigned seq) { int error; struct saved *last; @@ -1570,7 +1571,7 @@ static int pick_link(struct nameidata *nd, struct path *link, unsigned seq) last = nd->stack + nd->depth++; last->link = *link; last->cookie = NULL; - last->inode = d_backing_inode(link->dentry); + last->inode = inode; return 1; } @@ -1581,13 +1582,14 @@ static int pick_link(struct nameidata *nd, struct path *link, unsigned seq) * for the common case. */ static inline int should_follow_link(struct nameidata *nd, struct path *link, - int follow, unsigned seq) + int follow, + struct inode *inode, unsigned seq) { if (likely(!d_is_symlink(link->dentry))) return 0; if (!follow) return 0; - return pick_link(nd, link, seq); + return pick_link(nd, link, inode, seq); } enum {WALK_GET = 1, WALK_PUT = 2}; @@ -1627,7 +1629,7 @@ static int walk_component(struct nameidata *nd, int flags) if (flags & WALK_PUT) put_link(nd); - err = should_follow_link(nd, &path, flags & WALK_GET, seq); + err = should_follow_link(nd, &path, flags & WALK_GET, inode, seq); if (unlikely(err)) return err; path_to_nameidata(&path, nd); @@ -2349,7 +2351,8 @@ done: put_link(nd); path->dentry = dentry; path->mnt = nd->path.mnt; - error = should_follow_link(nd, path, nd->flags & LOOKUP_FOLLOW, 0); + error = should_follow_link(nd, path, nd->flags & LOOKUP_FOLLOW, + d_backing_inode(dentry), 0); if (unlikely(error)) return error; mntget(path->mnt); @@ -3063,7 +3066,8 @@ retry_lookup: finish_lookup: if (nd->depth) put_link(nd); - error = should_follow_link(nd, &path, nd->flags & LOOKUP_FOLLOW, seq); + error = should_follow_link(nd, &path, nd->flags & LOOKUP_FOLLOW, + inode, seq); if (unlikely(error)) return error; |