lkml.org 
[lkml]   [2015]   [May]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v3 108/110] enable passing fast relative symlinks without dropping out of RCU mode
Date
From: Al Viro <viro@zeniv.linux.org.uk>

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/namei.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/fs/namei.c b/fs/namei.c
index 9ef8c50..1771143 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -967,10 +967,6 @@ const char *get_link(struct nameidata *nd)
}

_cond_resched();
- if (nd->flags & LOOKUP_RCU) {
- if (unlikely(unlazy_walk(nd, NULL, 0)))
- return ERR_PTR(-ECHILD);
- }

error = security_inode_follow_link(dentry, inode,
nd->flags & LOOKUP_RCU);
@@ -980,6 +976,10 @@ const char *get_link(struct nameidata *nd)
nd->last_type = LAST_BIND;
res = inode->i_link;
if (!res) {
+ if (nd->flags & LOOKUP_RCU) {
+ if (unlikely(unlazy_walk(nd, NULL, 0)))
+ return ERR_PTR(-ECHILD);
+ }
res = inode->i_op->follow_link(dentry, &last->cookie);
if (IS_ERR_OR_NULL(res)) {
last->cookie = NULL;
@@ -987,6 +987,10 @@ const char *get_link(struct nameidata *nd)
}
}
if (*res == '/') {
+ if (nd->flags & LOOKUP_RCU) {
+ if (unlikely(unlazy_walk(nd, NULL, 0)))
+ return ERR_PTR(-ECHILD);
+ }
if (!nd->root.mnt)
set_root(nd);
path_put(&nd->path);
--
2.1.4


\
 
 \ /
  Last update: 2015-05-11 20:41    [W:0.723 / U:22.512 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site