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Bob Peterson 55c0c4ac0b [GFS2] GFS2: chmod hung - fix race in thread creation 
The problem boiled down to a race between the gdlm_init_threads()
function initializing thread1 and its setting of blist = 1.
Essentially, "if (current == ls->thread1)" was checked by the thread
before the thread creator set ls->thread1.

Since thread1 is the only thread who is allowed to work on the
blocking queue, and since neither thread thought it was thread1, no one
was working on the queue.  So everything just sat.

This patch reuses the ls->async_lock spin_lock to fix the race,
and it fixes the problem.  I've done more than 2000 iterations of the
loop that was recreating the failure and it seems to work.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

--
 		2007-10-10 08:56:22 +01:00
..
locking [GFS2] GFS2: chmod hung - fix race in thread creation 2007-10-10 08:56:22 +01:00
Kconfig [DLM/GFS2] indent help text 2007-02-05 13:38:20 -05:00
Makefile [GFS2] Fix sign problem in quota/statfs and cleanup _host structures 2007-07-09 08:23:10 +01:00
acl.c Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check 2007-07-17 12:00:03 -07:00
acl.h [GFS2] Remove gfs2_check_acl() 2006-11-30 10:37:32 -05:00
bmap.c [GFS2] Fix ordering of dirty/journal for ordered buffer unstuffing 2007-10-10 08:56:05 +01:00
bmap.h [GFS2] Fix bmap to map extents properly 2006-10-20 09:13:40 -04:00
daemon.c [GFS2] Reduce number of gfs2_scand processes to one 2007-10-10 08:55:08 +01:00
daemon.h [GFS2] Reduce number of gfs2_scand processes to one 2007-10-10 08:55:08 +01:00
dir.c [GFS2] Add a missing gfs2_trans_add_bh() 2007-10-10 08:55:32 +01:00
dir.h [GFS2] Clean up inode number handling 2007-07-09 08:22:24 +01:00
eaops.c [GFS2] mark struct *_operations const 2007-10-10 08:55:03 +01:00
eaops.h [GFS2] mark struct *_operations const 2007-10-10 08:55:03 +01:00
eattr.c [GFS2] Add nanosecond timestamp feature 2007-07-09 08:23:12 +01:00
eattr.h [GFS2] gfs2 misc endianness annotations 2006-11-30 10:33:46 -05:00
gfs2.h [GFS2] Update copyright, tidy up incore.h 2006-09-01 11:05:15 -04:00
glock.c [GFS2] Move inode deletion out of blocking_cb 2007-10-10 08:56:17 +01:00
glock.h [GFS2] flocks from same process trip kernel BUG at fs/gfs2/glock.c:1118! 2007-10-10 08:56:14 +01:00
glops.c [GFS2] Clean up gfs2_trans_add_revoke() 2007-10-10 08:56:12 +01:00
glops.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
incore.h [GFS2] Replace revoke structure with bufdata structure 2007-10-10 08:56:07 +01:00
inode.c [GFS2] fix inode meta data corruption 2007-10-10 08:55:51 +01:00
inode.h [GFS2] Remove i_mode passing from NFS File Handle 2007-07-09 08:24:11 +01:00
lm.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
lm.h [GFS2] Use void * instead of typedef for locking module interface 2006-09-08 10:17:58 -04:00
locking.c [GFS2] Export lm_interface to kernel headers 2006-09-19 08:45:18 -04:00
log.c [GFS2] Clean up gfs2_trans_add_revoke() 2007-10-10 08:56:12 +01:00
log.h [GFS2] Introduce gfs2_remove_from_ail 2007-10-10 08:55:55 +01:00
lops.c [GFS2] Clean up gfs2_trans_add_revoke() 2007-10-10 08:56:12 +01:00
lops.h [GFS2] assertion failure after writing to journaled file, umount 2007-07-09 08:23:47 +01:00
main.c [GFS2] Reduce number of gfs2_scand processes to one 2007-10-10 08:55:08 +01:00
meta_io.c [GFS2] Clean up gfs2_trans_add_revoke() 2007-10-10 08:56:12 +01:00
meta_io.h [GFS2] Move pin/unpin into lops.c, clean up locking 2007-10-10 08:56:00 +01:00
mount.c [GFS2] Add NULL entry to token table 2007-10-10 08:55:34 +01:00
mount.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
ops_address.c [GFS2] Clean up ordered write code 2007-10-10 08:56:03 +01:00
ops_address.h [GFS2] Addendum patch 2 for gfs2_grow 2007-07-09 08:22:19 +01:00
ops_dentry.c [GFS2] Clean up inode number handling 2007-07-09 08:22:24 +01:00
ops_dentry.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
ops_export.c knfsd: exportfs: add exportfs.h header 2007-07-17 10:23:06 -07:00
ops_file.c [GFS2] flocks from same process trip kernel BUG at fs/gfs2/glock.c:1118! 2007-10-10 08:56:14 +01:00
ops_file.h [GFS2] Only set inode flags when required 2006-11-30 10:34:45 -05:00
ops_fstype.c [GFS2] Clean up ordered write code 2007-10-10 08:56:03 +01:00
ops_fstype.h [GFS2] Fix sign problem in quota/statfs and cleanup _host structures 2007-07-09 08:23:10 +01:00
ops_inode.c [GFS2] Correct lock ordering in unlink 2007-10-10 08:55:53 +01:00
ops_inode.h [PATCH] mark struct inode_operations const 2 2007-02-12 09:48:46 -08:00
ops_super.c [GFS2] Reduce number of gfs2_scand processes to one 2007-10-10 08:55:08 +01:00
ops_super.h [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
ops_vm.c mm: fault feedback #2 2007-07-19 10:04:41 -07:00
ops_vm.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
quota.c [GFS2] Fix quota do_list operation hang 2007-10-10 08:55:27 +01:00
quota.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
recovery.c [GFS2] Ensure journal file cache is flushed after recovery 2007-10-10 08:55:12 +01:00
recovery.h [GFS2] split and annotate gfs2_log_head 2006-11-30 10:33:14 -05:00
rgrp.c [GFS2] invalid metadata block - REVISED 2007-10-10 08:55:10 +01:00
rgrp.h [GFS2] Addendum patch 2 for gfs2_grow 2007-07-09 08:22:19 +01:00
super.c [GFS2] Reduce number of gfs2_scand processes to one 2007-10-10 08:55:08 +01:00
super.h [GFS2] Fix sign problem in quota/statfs and cleanup _host structures 2007-07-09 08:23:10 +01:00
sys.c [GFS2] Reduce number of gfs2_scand processes to one 2007-10-10 08:55:08 +01:00
sys.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
trans.c [GFS2] Clean up gfs2_trans_add_revoke() 2007-10-10 08:56:12 +01:00
trans.h [GFS2] Clean up gfs2_trans_add_revoke() 2007-10-10 08:56:12 +01:00
util.c [GFS2] Fix sign problem in quota/statfs and cleanup _host structures 2007-07-09 08:23:10 +01:00
util.h Merge master.kernel.org:/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw 2006-12-07 09:13:20 -08:00