diff options
| author | Dipankar Sarma | 2005-09-09 22:04:14 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2005-09-09 22:57:55 +0200 |
| commit | b835996f628eadb55c5fb222ba46fe9395bf73c7 (patch) | |
| tree | d63d80585d197e1ffc299af4a0034049790fb197 /security/selinux | |
| parent | [PATCH] files: files struct with RCU (diff) | |
| download | kernel-qcow2-linux-b835996f628eadb55c5fb222ba46fe9395bf73c7.tar.gz kernel-qcow2-linux-b835996f628eadb55c5fb222ba46fe9395bf73c7.tar.xz kernel-qcow2-linux-b835996f628eadb55c5fb222ba46fe9395bf73c7.zip | |
[PATCH] files: lock-free fd look-up
With the use of RCU in files structure, the look-up of files using fds can now
be lock-free. The lookup is protected by rcu_read_lock()/rcu_read_unlock().
This patch changes the readers to use lock-free lookup.
Signed-off-by: Maneesh Soni <maneesh@in.ibm.com>
Signed-off-by: Ravikiran Thirumalai <kiran_th@gmail.com>
Signed-off-by: Dipankar Sarma <dipankar@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'security/selinux')
| -rw-r--r-- | security/selinux/hooks.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index acb5a495a902..f40c8221ec1b 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -1652,7 +1652,7 @@ static inline void flush_unauthorized_files(struct files_struct * files) continue; } if (devnull) { - atomic_inc(&devnull->f_count); + rcuref_inc(&devnull->f_count); } else { devnull = dentry_open(dget(selinux_null), mntget(selinuxfs_mount), O_RDWR); if (!devnull) { |