tiny mq_open optimization

PATCH New Ulrich Drepper 1 participant 1 message May 3, 2008

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Ulrich Drepper

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2008-05-03 19:29 UTC #0 lore raw

PATCH 1/1 tiny mq_open optimization

A very small cleanup for mq_open. We do not have to call set_close_on_exit if we create the file descriptor right away with the flag set. We have a function for this now. The resulting code is smaller and a tiny bit faster.

Signed-off-by Ulrich Drepper <[email protected]>

ipc/mqueue.c +1 -2

index 94fd3b0..b3b69fd 100644
@@ -673,7 +673,7 @@ asmlinkage long sys_mq_open(const char __user *u_name, int oflag, mode_t mode,
 	if (IS_ERR(name = getname(u_name)))
 		return PTR_ERR(name);
 
-	fd = get_unused_fd();
+	fd = get_unused_fd_flags(O_CLOEXEC);
 	if (fd < 0)
 		goto out_putname;

@@ -709,7 +709,6 @@ asmlinkage long sys_mq_open(const char __user *u_name, int oflag, mode_t mode,
 		goto out_putfd;
 	}
 
-	set_close_on_exec(fd, 1);
 	fd_install(fd, filp);
 	goto out_upsem;