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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-14 23:48:31 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-14 23:48:31 +0200 |
| commit | d1794f2c5b5817eb79ccc5e00701ca748d1b073a (patch) | |
| tree | 5a4c98e694e88a8c82f342d0cc9edb2a4cbbef36 /drivers/s390/char/monreader.c | |
| parent | ftrace: document updates (diff) | |
| parent | Merge commit 'v2.6.26' into bkl-removal (diff) | |
| download | linux-d1794f2c5b5817eb79ccc5e00701ca748d1b073a.tar.xz linux-d1794f2c5b5817eb79ccc5e00701ca748d1b073a.zip | |
Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6
* 'bkl-removal' of git://git.lwn.net/linux-2.6: (146 commits)
IB/umad: BKL is not needed for ib_umad_open()
IB/uverbs: BKL is not needed for ib_uverbs_open()
bf561-coreb: BKL unneeded for open()
Call fasync() functions without the BKL
snd/PCM: fasync BKL pushdown
ipmi: fasync BKL pushdown
ecryptfs: fasync BKL pushdown
Bluetooth VHCI: fasync BKL pushdown
tty_io: fasync BKL pushdown
tun: fasync BKL pushdown
i2o: fasync BKL pushdown
mpt: fasync BKL pushdown
Remove BKL from remote_llseek v2
Make FAT users happier by not deadlocking
x86-mce: BKL pushdown
vmwatchdog: BKL pushdown
vmcp: BKL pushdown
via-pmu: BKL pushdown
uml-random: BKL pushdown
uml-mmapper: BKL pushdown
...
Diffstat (limited to 'drivers/s390/char/monreader.c')
| -rw-r--r-- | drivers/s390/char/monreader.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/char/monreader.c b/drivers/s390/char/monreader.c index f0e4c96afbf8..35fd8dfcaaa6 100644 --- a/drivers/s390/char/monreader.c +++ b/drivers/s390/char/monreader.c @@ -10,6 +10,7 @@ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> +#include <linux/smp_lock.h> #include <linux/errno.h> #include <linux/types.h> #include <linux/kernel.h> @@ -291,6 +292,7 @@ static int mon_open(struct inode *inode, struct file *filp) /* * only one user allowed */ + lock_kernel(); rc = -EBUSY; if (test_and_set_bit(MON_IN_USE, &mon_in_use)) goto out; @@ -327,6 +329,7 @@ static int mon_open(struct inode *inode, struct file *filp) goto out_path; } filp->private_data = monpriv; + unlock_kernel(); return nonseekable_open(inode, filp); out_path: @@ -336,6 +339,7 @@ out_priv: out_use: clear_bit(MON_IN_USE, &mon_in_use); out: + unlock_kernel(); return rc; } |