diff options
| author | Jonathan Corbet <corbet@lwn.net> | 2008-05-18 21:32:43 (GMT) |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2008-06-20 20:05:53 (GMT) |
| commit | f2b9857eee17797541b845782ade4d7a9d50f843 (patch) | |
| tree | 914a00afee2ff953199f99f7cf869e3fd83b36bd /drivers/infiniband/core/ucm.c | |
| parent | 0b2806768899dba5967bcd4a3b93eaed9a1dc4f3 (diff) | |
| download | linux-f2b9857eee17797541b845782ade4d7a9d50f843.tar.xz | |
Add a bunch of cycle_kernel_lock() calls
All of the open() functions which don't need the BKL on their face may
still depend on its acquisition to serialize opens against driver
initialization. So make those functions acquire then release the BKL to be
on the safe side.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'drivers/infiniband/core/ucm.c')
| -rw-r--r-- | drivers/infiniband/core/ucm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c index 3e6a8ff..b25675f 100644 --- a/drivers/infiniband/core/ucm.c +++ b/drivers/infiniband/core/ucm.c @@ -45,6 +45,7 @@ #include <linux/cdev.h> #include <linux/idr.h> #include <linux/mutex.h> +#include <linux/smp_lock.h> #include <asm/uaccess.h> @@ -1155,11 +1156,11 @@ static unsigned int ib_ucm_poll(struct file *filp, return mask; } -/* No BKL needed here: no global resources used */ static int ib_ucm_open(struct inode *inode, struct file *filp) { struct ib_ucm_file *file; + cycle_kernel_lock(); file = kmalloc(sizeof(*file), GFP_KERNEL); if (!file) return -ENOMEM; |