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| author | Alan Cox <alan@redhat.com> | 2008-10-13 10:39:13 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-13 09:51:41 -0700 |
| commit | 452a00d2ee288f2cbc36f676edd06cb14d2878c1 (patch) | |
| tree | c8251c73924a6ac9b174bc557357bfeff0c8d1a8 /fs | |
| parent | f4d2a6c2096b764decb20070b1bf4356de9144a8 (diff) | |
| download | kernel_samsung_smdk4412-452a00d2ee288f2cbc36f676edd06cb14d2878c1.zip kernel_samsung_smdk4412-452a00d2ee288f2cbc36f676edd06cb14d2878c1.tar.gz kernel_samsung_smdk4412-452a00d2ee288f2cbc36f676edd06cb14d2878c1.tar.bz2 | |
tty: Make get_current_tty use a kref
We now return a kref covered tty reference. That ensures the tty structure
doesn't go away when you have a return from get_current_tty. This is not
enough to protect you from most of the resources being freed behind your
back - yet.
[Updated to include fixes for SELinux problems found by Andrew Morton and
an s390 leak found while debugging the former]
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/dquot.c | 6 |
1 files changed, 3 insertions, 3 deletions
@@ -897,8 +897,9 @@ static void print_warning(struct dquot *dquot, const int warntype) mutex_lock(&tty_mutex); tty = get_current_tty(); + mutex_unlock(&tty_mutex); if (!tty) - goto out_lock; + return; tty_write_message(tty, dquot->dq_sb->s_id); if (warntype == QUOTA_NL_ISOFTWARN || warntype == QUOTA_NL_BSOFTWARN) tty_write_message(tty, ": warning, "); @@ -926,8 +927,7 @@ static void print_warning(struct dquot *dquot, const int warntype) break; } tty_write_message(tty, msg); -out_lock: - mutex_unlock(&tty_mutex); + tty_kref_put(tty); } #endif |