On 09/17/2013 01:10 AM, greg Kroah-Hartman wrote: > On Mon, Sep 16, 2013 at 11:13:48AM +0530, Vineet Gupta wrote: >> On 09/10/2013 11:57 AM, Vineet Gupta wrote: >>> On 09/05/2013 11:55 PM, David Miller wrote: >>>> From: Vineet Gupta <Vineet.Gupta1@xxxxxxxxxxxx> >>>> Date: Wed, 4 Sep 2013 17:17:15 +0530 >>>> >>>>> copying large files to a NFS mounted host was taking absurdly large >>>>> time. >>>>> >>>>> Turns out that TX BD reclaim had a sublte bug. >>>>> >>>>> Loop starts off from @txbd_dirty cursor and stops when it hits a BD >>>>> still in use by controller. However when it stops it needs to keep the >>>>> cursor at that very BD to resume scanning in next iteration. However it >>>>> was erroneously incrementing the cursor, causing the next scan(s) to >>>>> fail too, unless the BD chain was completely drained out. >>>>> >>>>> [ARCLinux]$ ls -l -sh /disk/log.txt >>>>> 17976 -rw-r--r-- 1 root root 17.5M Sep /disk/log.txt >>>>> >>>>> ========== Before ===================== >>>>> [ARCLinux]$ time cp /disk/log.txt /mnt/. >>>>> real 31m 7.95s >>>>> user 0m 0.00s >>>>> sys 0m 0.10s >>>>> >>>>> ========== After ===================== >>>>> [ARCLinux]$ time cp /disk/log.txt /mnt/. >>>>> real 0m 24.33s >>>>> user 0m 0.00s >>>>> sys 0m 0.19s >>>>> >>>>> Signed-off-by: Vineet Gupta <vgupta@xxxxxxxxxxxx> >>>> Applied. >>>> >>> Hi Greg, >>> >>> This needs a stable backport (3.11). >>> Mainline commit 27082ee1b92f4d41e78b85 >>> >>> Thx, >>> -Vineet >> Hi Greg, >> >> I didn't spot this one in your stable-queue for 3.11. >> Please apply. > Network patches for the stable tree needs to go through the networking > maintainer. Please let them know about this and they will forward it on > to me if needed. > > thanks, > > greg k-h Hi David, Can you please do the needful for stable 3.11 backport of this patch. Thx, -Vineet -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html