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| author | Dipankar Sarma <dipankar@in.ibm.com> | 2005-09-09 13:04:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-09 13:57:55 -0700 |
| commit | b835996f628eadb55c5fb222ba46fe9395bf73c7 (patch) | |
| tree | d63d80585d197e1ffc299af4a0034049790fb197 /security | |
| parent | ab2af1f5005069321c5d130f09cce577b03f43ef (diff) | |
| download | lwn-b835996f628eadb55c5fb222ba46fe9395bf73c7.tar.gz lwn-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')
| -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) { |