lkml.org 
[lkml]   [2002]   [Sep]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH] 2.5.34-bk fcntl lockup
Hi Linus,
please apply this.

Fixes endless loop without schedule which happens as soon as smbd
invokes fcntl64(7, F_SETLK64, ...). fcntl_setlk64 gets cmd F_SETLK64,
not F_SETLK tested in the loop;

Maybe return value from posix_lock_file should be changed to -EINPROGRESS
or -EJUKEBOX instead of testing passed cmd in callers, but this oneliner
works too. If you preffer changing posix_lock_file return value to clearly
distinugish between -EAGAIN and lock request queued, I'll do that.
Best regards,
Petr Vandrovec
vandrove@vc.cvut.cz


diff -urdN linux/fs/locks.c linux/fs/locks.c
--- linux/fs/locks.c 2002-09-13 21:49:17.000000000 +0200
+++ linux/fs/locks.c 2002-09-14 11:19:37.000000000 +0200
@@ -1588,7 +1588,7 @@

for (;;) {
error = posix_lock_file(filp, file_lock);
- if ((error != -EAGAIN) || (cmd == F_SETLK))
+ if ((error != -EAGAIN) || (cmd == F_SETLK64))
break;
error = wait_event_interruptible(file_lock->fl_wait,
!file_lock->fl_next);
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
\
 
 \ /
  Last update: 2005-03-22 13:28    [W:0.037 / U:0.336 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site