linux-kernel - [RFC] fsfreeze: moving from uniterruptible to killable

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Sun, 24 Mar 2013 10:10:59 +0100
From:	Marco Stornelli <marco.stornelli@...il.com>
To:	Linux FS Devel <linux-fsdevel@...r.kernel.org>
CC:	Linux Kernel <linux-kernel@...r.kernel.org>,
	Jan Kara <jack@...e.cz>
Subject: [RFC] fsfreeze: moving from uniterruptible to killable

When a fs is frozen, a process can hang because we wait in
uniterruptible state. We give the user the possibility to kill the process.

Not-signed-off-by: Marco Stornelli <marco.stornelli@...il.com>
---

--- fs/super.c.orig	2013-03-24 09:56:33.000000000 +0100
+++ fs/super.c	2013-03-24 09:58:41.000000000 +0100
@@ -1198,7 +1198,7 @@ retry:
 	if (unlikely(sb->s_writers.frozen >= level)) {
 		if (!wait)
 			return 0;
-		wait_event(sb->s_writers.wait_unfrozen,
+		wait_event_killable(sb->s_writers.wait_unfrozen,
 			   sb->s_writers.frozen < level);
 	}
 
@@ -1248,7 +1248,7 @@ static void sb_wait_write(struct super_b
 		 * of frozen and checking of the counter
 		 */
 		prepare_to_wait(&sb->s_writers.wait, &wait,
-				TASK_UNINTERRUPTIBLE);
+				 TASK_KILLABLE);
 
 		writers = percpu_counter_sum(&sb->s_writers.counter[level-1]);
 		if (writers)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/