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| /openbmc/linux/fs/gfs2/ |
| H A D | glock.h | diff 06e908cd9ead1f215cc30132aac5ce132a352fbe Wed Apr 18 15:58:19 CDT 2018 Bob Peterson <rpeterso@redhat.com> gfs2: Allow node-wide exclusive glock sharing
Introduce a new LM_FLAG_NODE_SCOPE glock holder flag: when taking a
glock in LM_ST_EXCLUSIVE (EX) mode and with the LM_FLAG_NODE_SCOPE flag
set, the exclusive lock is shared among all local processes who are
holding the glock in EX mode and have the LM_FLAG_NODE_SCOPE flag set.
From the point of view of other nodes, the lock is still held
exclusively.
A future patch will start using this flag to improve performance with
rgrp sharing.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
|
| H A D | glock.c | diff 06e908cd9ead1f215cc30132aac5ce132a352fbe Wed Apr 18 15:58:19 CDT 2018 Bob Peterson <rpeterso@redhat.com> gfs2: Allow node-wide exclusive glock sharing
Introduce a new LM_FLAG_NODE_SCOPE glock holder flag: when taking a
glock in LM_ST_EXCLUSIVE (EX) mode and with the LM_FLAG_NODE_SCOPE flag
set, the exclusive lock is shared among all local processes who are
holding the glock in EX mode and have the LM_FLAG_NODE_SCOPE flag set.
From the point of view of other nodes, the lock is still held
exclusively.
A future patch will start using this flag to improve performance with
rgrp sharing.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
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