Steven Whitehouse 7afd88d916 [GFS2] Fix a page lock / glock deadlock ... We've previously been using a "try lock" in readpage on the basis that it would prevent deadlocks due to the inverted lock ordering (our normal lock ordering is glock first and then page lock). Unfortunately tests have shown that this isn't enough. If the glock has a demote request queued such that run_queue() in the glock code tries to do a demote when its called under readpage then it will try and write out all the dirty pages which requires locking them. This then deadlocks with the page locked by readpage. The solution is to always require two calls into readpage. The first unlocks the page, gets the glock and returns AOP_TRUNCATED_PAGE, the second does the actual readpage and unlocks the glock & page as required. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>		2008-03-31 10:41:12 +01:00
..
locking	[GFS2] proper extern for gfs2/locking/dlm/mount.c:gdlm_ops	2008-03-31 10:41:09 +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
bmap.c	[GFS2] Get inode buffer only once per block map call	2008-03-31 10:40:58 +01:00
bmap.h	[GFS2] Remove function gfs2_get_block	2008-01-25 08:08:25 +00:00
daemon.c	[GFS2] Move gfs2_logd into log.c	2008-01-25 08:07:56 +00:00
daemon.h	[GFS2] Move gfs2_logd into log.c	2008-01-25 08:07:56 +00:00
dir.c	[GFS2] be*_add_cpu conversion	2008-03-31 10:41:03 +01:00
dir.h	[GFS2] Clean up inode number handling	2007-07-09 08:22:24 +01:00
eaops.c	[GFS2] Remove unrequired code	2008-01-25 08:08:13 +00:00
eaops.h	[GFS2] mark struct *_operations const	2007-10-10 08:55:03 +01:00
eattr.c	[GFS2] Eliminate (almost) duplicate field from gfs2_inode	2008-03-31 10:40:55 +01:00
eattr.h
gfs2.h
glock.c	[GFS2] Fix bug where we called drop_bh incorrectly	2008-03-31 10:41:01 +01:00
glock.h	[GFS2] Fix a page lock / glock deadlock	2008-03-31 10:41:12 +01:00
glops.c	[GFS2] Remove rgrp and glock version numbers	2008-03-31 10:40:29 +01:00
glops.h
incore.h	[GFS2] Eliminate (almost) duplicate field from gfs2_inode	2008-03-31 10:40:55 +01:00
inode.c	[GFS2] Fix a page lock / glock deadlock	2008-03-31 10:41:12 +01:00
inode.h	[GFS2] Eliminate (almost) duplicate field from gfs2_inode	2008-03-31 10:40:55 +01:00
Kconfig	[GFS2] Eliminate (almost) duplicate field from gfs2_inode	2008-03-31 10:40:55 +01:00
locking.c
log.c	[GFS2] Only do lo_incore_commit once	2008-03-31 10:39:54 +01:00
log.h	[GFS2] Move gfs2_logd into log.c	2008-01-25 08:07:56 +00:00
lops.c	[GFS2] Plug an unlikely leak	2008-03-31 10:40:05 +01:00
lops.h	[GFS2] Only do lo_incore_commit once	2008-03-31 10:39:54 +01:00
main.c	[GFS2] Allocate gfs2_rgrpd from slab memory	2008-03-31 10:40:07 +01:00
Makefile	[GFS2] Remove lm.[ch] and distribute content	2008-03-31 10:40:26 +01:00
meta_io.c	[GFS2] Fix typo	2008-01-25 08:19:51 +00:00
meta_io.h	[GFS2] Remove useless i_cache from inodes	2008-01-25 08:07:16 +00:00
mount.c	[GFS2] Add NULL entry to token table	2007-10-10 08:55:34 +01:00
mount.h
ops_address.c	[GFS2] Fix a page lock / glock deadlock	2008-03-31 10:41:12 +01:00
ops_address.h	[GFS2] Remove function gfs2_get_block	2008-01-25 08:08:25 +00:00
ops_dentry.c	[GFS2] Fix a page lock / glock deadlock	2008-03-31 10:41:12 +01:00
ops_dentry.h
ops_export.c	Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p)	2008-02-07 08:42:26 -08:00
ops_file.c	[GFS2] gfs2/ops_file.c should #include "ops_inode.h"	2008-03-31 10:41:06 +01:00
ops_fstype.c	[GFS2] Remove rgrp and glock version numbers	2008-03-31 10:40:29 +01:00
ops_fstype.h	exportfs: make struct export_operations const	2007-10-22 08:13:21 -07:00
ops_inode.c	[GFS2] Fix a page lock / glock deadlock	2008-03-31 10:41:12 +01:00
ops_inode.h	[GFS2] Remove lock methods for lock_nolock protocol	2008-01-25 08:08:15 +00:00
ops_super.c	[GFS2] Remove lm.[ch] and distribute content	2008-03-31 10:40:26 +01:00
ops_super.h
quota.c	[GFS2] Reduce inode size by moving i_alloc out of line	2008-01-25 08:18:25 +00:00
quota.h
recovery.c	[GFS2] Remove lm.[ch] and distribute content	2008-03-31 10:40:26 +01:00
recovery.h
rgrp.c	[GFS2] Add extent allocation to block allocator	2008-03-31 10:40:47 +01:00
rgrp.h	[GFS2] Add extent allocation to block allocator	2008-03-31 10:40:47 +01:00
super.c	[GFS2] Streamline indirect pointer tree height calculation	2008-03-31 10:39:46 +01:00
super.h	[GFS2] Remove lm.[ch] and distribute content	2008-03-31 10:40:26 +01:00
sys.c	[GFS2] Remove unused counters	2008-03-31 10:40:34 +01:00
sys.h
trans.c	[GFS2] Update gfs2_trans_add_unrevoke to accept extents	2008-03-31 10:40:42 +01:00
trans.h	[GFS2] Update gfs2_trans_add_unrevoke to accept extents	2008-03-31 10:40:42 +01:00
util.c	[GFS2] Remove lm.[ch] and distribute content	2008-03-31 10:40:26 +01:00
util.h	[GFS2] Remove lm.[ch] and distribute content	2008-03-31 10:40:26 +01:00