luck/tmp_suning_uos_patched
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Call fasync() functions without the BKL

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lock_kernel() calls have been pushed down into code which needs it, so
there is no need to take the BKL at this level anymore.

This work inspired and aided by Andi Kleen's unlocked_fasync() patches.

Acked-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Jonathan Corbet 2008-06-20 09:12:01 -06:00
parent 2db9f0a35a
commit a238b790d5
1 changed files with 0 additions and 3 deletions
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3
fs/fcntl.c
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@ -12,7 +12,6 @@
#include <linux/fdtable.h>
#include <linux/capability.h>
#include <linux/dnotify.h>
#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/security.h>
@ -227,7 +226,6 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
if (error)
return error;
lock_kernel();
if ((arg ^ filp->f_flags) & FASYNC) {
if (filp->f_op && filp->f_op->fasync) {
error = filp->f_op->fasync(fd, filp, (arg & FASYNC) != 0);
@ -238,7 +236,6 @@ static int setfl(int fd, struct file * filp, unsigned long arg)
filp->f_flags = (arg & SETFL_MASK) | (filp->f_flags & ~SETFL_MASK);
out:
unlock_kernel();
return error;
}