X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=fs%2Fioctl.c;h=43e8b2c0664b1b3d302a6d46e3fa40185edb5ae7;hb=541ef5cbb8e68189d47272cea52a69abc30259bc;hp=d152856c371be4906b7effec1f3c42842a4cee2d;hpb=d9214556b11a8d18ff588e60824c12041d30f791;p=karo-tx-linux.git

diff --git a/fs/ioctl.c b/fs/ioctl.c
index d152856c371b..43e8b2c0664b 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: