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Benjamin Marzinski b524fe646c [GFS2] flush the glock completely in inode_go_sync 
Fix for bz #231910
When filemap_fdatawrite() is called on the inode mapping in data=ordered mode,
it will add the glock to the log. In inode_go_sync(), if you do the
gfs2_log_flush() before this, after the filemap_fdatawrite() call, the glock
and its associated data buffers will be on the log again. This means you can
demote a lock from exclusive, without having it flushed from the log. The
attached patch simply moves the gfs2_log_flush up to after the
filemap_fdatawrite() call.

Originally, I tried moving the gfs2_log_flush to after gfs2_meta_sync(), but
that caused me to trip the following assert.

GFS2: fsid=cypher-36:test.0: fatal: assertion "!buffer_busy(bh)" failed
GFS2: fsid=cypher-36:test.0:   function = gfs2_ail_empty_gl, file = fs/gfs2/glops.c, line = 61

It appears that gfs2_log_flush() puts some of the glocks buffers in the busy
state and the filemap_fdatawrite() call is necessary to flush them. This makes
me worry slightly that a related problem could happen because of moving the
gfs2_log_flush() after the initial filemap_fdatawrite(), but I assume that
gfs2_ail_empty_gl() would catch that case as well.

Signed-off-by: Benjamin E. Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2007-07-09 08:22:07 +01:00
..
locking header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
acl.c [GFS2] Remove gfs2_check_acl() 2006-11-30 10:37:32 -05:00
acl.h [GFS2] Remove gfs2_check_acl() 2006-11-30 10:37:32 -05:00
bmap.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
bmap.h [GFS2] Fix bmap to map extents properly 2006-10-20 09:13:40 -04:00
daemon.c [GFS2] Fix journal flush problem 2006-11-30 10:36:42 -05:00
daemon.h [GFS2] Update copyright, tidy up incore.h 2006-09-01 11:05:15 -04:00
dir.c [GFS2] printk warning fixes 2007-05-01 09:11:48 +01:00
dir.h [GFS2] Clean up/speed up readdir 2007-02-05 13:37:04 -05:00
eaops.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
eaops.h [GFS2] Extended attribute code style changes 2006-09-05 13:15:18 -04:00
eattr.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
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] Uncomment sprintf_symbol calling code 2007-05-01 09:51:39 +01:00
glock.h Detach sched.h from mm.h 2007-05-21 09:18:19 -07:00
glops.c [GFS2] flush the glock completely in inode_go_sync 2007-07-09 08:22:07 +01:00
glops.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
incore.h [GFS2] lockdump improvements 2007-05-01 09:11:33 +01:00
inode.c [GFS2] Fix bz 229831, lookup returns wrong inode 2007-03-07 14:01:53 -05:00
inode.h [GFS2] make gfs2_change_nlink_i() static 2007-02-05 13:36:49 -05:00
Kconfig [DLM/GFS2] indent help text 2007-02-05 13:38:20 -05:00
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] fs/gfs2/log.c:log_bmap() fix printk format warning 2006-11-30 10:37:04 -05:00
log.h [GFS2] Move gfs2_meta_syncfs() into log.c 2006-11-30 10:36:45 -05:00
lops.c [GFS2] Fix log entry list corruption 2007-05-01 09:10:50 +01:00
lops.h [GFS2] split and annotate gfs2_log_head 2006-11-30 10:33:14 -05:00
main.c Remove SLAB_CTOR_CONSTRUCTOR 2007-05-17 05:23:04 -07:00
Makefile [GFS2] Update copyright, tidy up incore.h 2006-09-01 11:05:15 -04:00
meta_io.c [PATCH] Transform kmem_cache_alloc()+memset(0) -> kmem_cache_zalloc(). 2007-02-11 10:51:27 -08:00
meta_io.h [GFS2] Move gfs2_meta_syncfs() into log.c 2006-11-30 10:36:45 -05:00
mount.c [GFS2] use lib/parser for parsing mount options 2007-05-01 09:11:43 +01:00
mount.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
ondisk.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
ops_address.c [GFS2] Patch to fix mmap of stuffed files 2007-05-01 09:11:46 +01:00
ops_address.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
ops_dentry.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
ops_dentry.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
ops_export.c [GFS2] NFS filehandle check 2007-03-07 13:57:34 -05:00
ops_export.h [GFS2] split and annotate gfs2_inum 2006-11-30 10:33:32 -05:00
ops_file.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
ops_file.h [GFS2] Only set inode flags when required 2006-11-30 10:34:45 -05:00
ops_fstype.c [GFS2] lockdump improvements 2007-05-01 09:11:33 +01:00
ops_fstype.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
ops_inode.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
ops_inode.h [PATCH] mark struct inode_operations const 2 2007-02-12 09:48:46 -08:00
ops_super.c [GFS2] Fix bz 224480 and cleanup glock demotion code 2007-05-01 09:10:39 +01:00
ops_super.h [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
ops_vm.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
ops_vm.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
quota.c [GFS2] fix locking mistake 2007-03-07 13:56:41 -05:00
quota.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
recovery.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
recovery.h [GFS2] split and annotate gfs2_log_head 2006-11-30 10:33:14 -05:00
rgrp.c [GFS2] Fix bz 234168 (ignoring rgrp flags) 2007-05-01 09:11:17 +01:00
rgrp.h [GFS2] Fix uninitialised variable 2006-10-12 17:10:15 -04:00
super.c [GFS2] Remove unused variable 2007-03-07 14:02:30 -05:00
super.h [GFS2] split and annotate gfs2_statfs_change 2006-11-30 10:33:38 -05:00
sys.c remove "struct subsystem" as it is no longer needed 2007-05-02 18:57:59 -07:00
sys.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
trans.c [GFS2] Export lm_interface to kernel headers 2006-09-19 08:45:18 -04:00
trans.h [GFS2] Make headers compile on their own 2006-09-05 10:39:21 -04:00
util.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
util.h Merge master.kernel.org:/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw 2006-12-07 09:13:20 -08:00