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linux/fs/dlm
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David Teigland 9000831839 dlm: avoid unnecessary posix unlock 
When the kernel clears flocks/plocks during close, it calls posix
unlock when there are flocks but no posix locks.  Without this
patch, that unnecessary posix unlock is passed to userland
(dlm_controld), across the cluster, and back to the kernel.
This can create a lot of plock activity, even when no posix
locks had been used.

This patch copies the nfs approach, and skips the full posix
unlock if there is no plock found during the vfs unlock phase.

Signed-off-by: David Teigland <teigland@redhat.com>
2013-04-08 12:03:15 -05:00
..
ast.c dlm: fix uninitialized spinlock 2012-08-08 11:33:43 -05:00
ast.h dlm: use workqueue for callbacks 2011-07-15 12:30:43 -05:00
config.c fs: change return values from -EACCES to -EPERM 2013-02-26 02:46:14 -05:00
config.h dlm: fix deadlock between dlm_send and dlm_controld 2012-08-08 11:33:35 -05:00
debug_fs.c dlm: use rsbtbl as resource directory 2012-07-16 14:16:19 -05:00
dir.c dlm: use rsbtbl as resource directory 2012-07-16 14:16:19 -05:00
dir.h dlm: use rsbtbl as resource directory 2012-07-16 14:16:19 -05:00
dlm_internal.h dlm: avoid scanning unchanged toss lists 2013-01-07 12:02:49 -06:00
Kconfig fs/dlm: remove CONFIG_EXPERIMENTAL 2012-11-01 15:27:24 -05:00
lock.c dlm: convert to idr_alloc() 2013-02-27 19:10:19 -08:00
lock.h dlm: use rsbtbl as resource directory 2012-07-16 14:16:19 -05:00
lockspace.c dlm: don't use idr_remove_all() 2013-02-27 19:10:13 -08:00
lockspace.h dlm: detect available userspace daemon 2008-08-28 11:49:43 -05:00
lowcomms.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
lowcomms.h dlm: fix deadlock between dlm_send and dlm_controld 2012-08-08 11:33:35 -05:00
lvb_table.h
main.c dlm: fix deadlock between dlm_send and dlm_controld 2012-08-08 11:33:35 -05:00
Makefile dlm: move plock code from gfs2 2008-04-21 11:22:28 -05:00
member.c dlm: fix unlock balance warnings 2012-08-08 11:33:49 -05:00
member.h dlm: add recovery callbacks 2012-01-04 08:56:31 -06:00
memory.c dlm: NULL dereference on failure in kmem_cache_create() 2012-05-15 10:39:28 -05:00
memory.h dlm: improve rsb searches 2011-07-12 16:02:09 -05:00
midcomms.c dlm: fix up memory allocation flags 2008-12-23 10:15:40 -06:00
midcomms.h
netlink.c netlink: Rename pid to portid to avoid confusion 2012-09-10 15:30:41 -04:00
plock.c dlm: avoid unnecessary posix unlock 2013-04-08 12:03:15 -05:00
rcom.c dlm: fix unlock balance warnings 2012-08-08 11:33:49 -05:00
rcom.h dlm: use rsbtbl as resource directory 2012-07-16 14:16:19 -05:00
recover.c dlm: convert to idr_alloc() 2013-02-27 19:10:19 -08:00
recover.h dlm: use rsbtbl as resource directory 2012-07-16 14:16:19 -05:00
recoverd.c dlm: fix unlock balance warnings 2012-08-08 11:33:49 -05:00
recoverd.h dlm: fix unlock balance warnings 2012-08-08 11:33:49 -05:00
requestqueue.c dlm: fixes for nodir mode 2012-05-02 14:15:27 -05:00
requestqueue.h dlm: use proper C for dlm/requestqueue stuff (and fix alignment bug) 2008-02-04 01:21:32 -06:00
user.c dlm: check the write size from user 2013-02-04 15:31:22 -06:00
user.h dlm: record full callback state 2011-03-10 10:40:00 -06:00
util.c dlm: do not byteswap rcom_config 2008-02-04 01:23:43 -06:00
util.h