diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2016-01-10 08:35:23 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-01-28 02:13:28 +0300 |
| commit | 4a510969374ab8853451c337e43d28fb864e43fd (patch) | |
| tree | 7868ef29c68bd7265dcf6fe5b2ab4088abeb7842 /security | |
| parent | 527ffc11e1c0aa049b3a831d6f07ed98e06a0819 (diff) | |
| download | linux-4a510969374ab8853451c337e43d28fb864e43fd.tar.xz | |
tty: Make tty_files_lock per-tty
Access to tty->tty_files list is always per-tty, never for all ttys
simultaneously. Replace global tty_files_lock spinlock with per-tty
->files_lock. Initialize when the ->tty_files list is inited, in
alloc_tty_struct().
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/selinux/hooks.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index f8110cfd80ff..8010bc5391c3 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -2415,7 +2415,7 @@ static inline void flush_unauthorized_files(const struct cred *cred, tty = get_current_tty(); if (tty) { - spin_lock(&tty_files_lock); + spin_lock(&tty->files_lock); if (!list_empty(&tty->tty_files)) { struct tty_file_private *file_priv; @@ -2430,7 +2430,7 @@ static inline void flush_unauthorized_files(const struct cred *cred, if (file_path_has_perm(cred, file, FILE__READ | FILE__WRITE)) drop_tty = 1; } - spin_unlock(&tty_files_lock); + spin_unlock(&tty->files_lock); tty_kref_put(tty); } /* Reset controlling tty. */ |