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Diffstat (limited to 'fs/ioctl.c')
-rw-r--r--fs/ioctl.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/ioctl.c b/fs/ioctl.c
index d152856c371..43e8b2c0664 100644
--- a/fs/ioctl.c
+++ b/fs/ioctl.c
@@ -400,11 +400,9 @@ static int ioctl_fioasync(unsigned int fd, struct file *filp,
/* Did FASYNC state change ? */
if ((flag ^ filp->f_flags) & FASYNC) {
- if (filp->f_op && filp->f_op->fasync) {
- lock_kernel();
+ if (filp->f_op && filp->f_op->fasync)
error = filp->f_op->fasync(fd, filp, on);
- unlock_kernel();
- } else
+ else
error = -ENOTTY;
}
if (error)
@@ -440,11 +438,17 @@ int do_vfs_ioctl(struct file *filp, unsigned int fd, unsigned int cmd,
break;
case FIONBIO:
+ /* BKL needed to avoid races tweaking f_flags */
+ lock_kernel();
error = ioctl_fionbio(filp, argp);
+ unlock_kernel();
break;
case FIOASYNC:
+ /* BKL needed to avoid races tweaking f_flags */
+ lock_kernel();
error = ioctl_fioasync(fd, filp, argp);
+ unlock_kernel();
break;
case FIOQSIZE: