[gentoo-commits] linux-patches r2650 - genpatches-2.6/trunk/3.13

[gentoo-commits] linux-patches r2650 - genpatches-2.6/trunk/3.13

[Mike Pagano (mpagano)]

Author: mpagano
Date: 2014-01-23 18:31:00 +0000 (Thu, 23 Jan 2014)
New Revision: 2650

Added:
   genpatches-2.6/trunk/3.13/1900_frozen-fs-time-update.patch
Modified:
   genpatches-2.6/trunk/3.13/0000_README
Log:
Skip file_update_time on frozen fs

Modified: genpatches-2.6/trunk/3.13/0000_README
===================================================================
--- genpatches-2.6/trunk/3.13/0000_README	2014-01-21 15:00:14 UTC (rev 2649)
+++ genpatches-2.6/trunk/3.13/0000_README	2014-01-23 18:31:00 UTC (rev 2650)
@@ -50,7 +50,12 @@
 From:   https://bugs.gentoo.org/show_bug.cgi?id=449248
 Desc:   Enable mic mute led in thinkpads
 
+Patch:  1900_frozen-fs-time-update.patch
+From:   https://bugs.gentoo.org/show_bug.cgi?id=493002
+Desc:   Skip file_update_time on frozen fs
+
 Patch:  2400_kcopy-patch-for-infiniband-driver.patch
+Patch:  2400_kcopy-patch-for-infiniband-driver.patch
 From:   Alexey Shvetsov <alexxy@gentoo.org>
 Desc:   Zero copy for infiniband psm userspace driver
 

Added: genpatches-2.6/trunk/3.13/1900_frozen-fs-time-update.patch
===================================================================
--- genpatches-2.6/trunk/3.13/1900_frozen-fs-time-update.patch	                        (rev 0)
+++ genpatches-2.6/trunk/3.13/1900_frozen-fs-time-update.patch	2014-01-23 18:31:00 UTC (rev 2650)
@@ -0,0 +1,31 @@
+From a529bbf697530e4c57ba8293b0d659c46e50d3ad Mon Sep 17 00:00:00 2001
+From: Dmitry Monakhov <dmonakhov@openvz.org>
+Date: Wed, 15 Jan 2014 05:55:43 +0000
+Subject: fs/pipe.c: skip file_update_time on frozen fs
+
+Pipe has no data associated with fs so it is not good idea to block
+pipe_write() if FS is frozen, but we can not update file's time on such
+filesystem.  Let's use same idea as we use in touch_time().
+
+Addresses https://bugzilla.kernel.org/show_bug.cgi?id=65701
+
+Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
+Reviewed-by: Jan Kara <jack@suse.cz>
+Cc: Al Viro <viro@zeniv.linux.org.uk>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+---
+--- a/fs/pipe.c	2014-01-23 13:17:08.290011999 -0500
++++ b/fs/pipe.c	2014-01-23 13:18:24.140012053 -0500
+@@ -663,10 +663,11 @@ out:
+ 		wake_up_interruptible_sync_poll(&pipe->wait, POLLIN | POLLRDNORM);
+ 		kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
+ 	}
+-	if (ret > 0) {
++	if (ret > 0 && sb_start_write_trylock(file_inode(filp)->i_sb)) {
+ 		int err = file_update_time(filp);
+ 		if (err)
+ 			ret = err;
++		sb_end_write(file_inode(filp)->i_sb);
+ 	}
+ 	return ret;
+ }