[PATCH] nanosecond filesystem support???

[Jeff Chua <jeff.chua.linux@gmail.com>]

On 2/12/07, Andi Kleen <ak@suse.de> wrote:

> The bigger problem is getting a file system that support it.


Andi,

It seems that the part that's not returning nanosecond is in the code 
below. I've modified it, and now stat() is returning st_mtim.tv_nsec 
correctly.

I've tested it on ext2 and reiserfs, and both seems to be working.


I don't know why "t.tv_nsec = 0;" was set in the code. Any idea?



Thanks,
Jeff.


--- linux/kernel/time.c.org	2007-02-13 08:43:08 +0800
+++ linux/kernel/time.c	2007-02-13 08:52:29 +0800
@@ -86,7 +86,6 @@
  	if (get_user(tv.tv_sec, tptr))
  		return -EFAULT;

-	tv.tv_nsec = 0;

  	err = security_settime(&tv, NULL);
  	if (err)
@@ -269,7 +269,6 @@
  	if (gran <= jiffies_to_usecs(1) * 1000) {
  		/* nothing */
  	} else if (gran == 1000000000) {
-		t.tv_nsec = 0;
  	} else {
  		t.tv_nsec -= t.tv_nsec % gran;
  	}