gfs2: Fix glock rhashtable rcu bug

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commit 961ae1d83d upstream.

Before commit 88ffbf3e03 "GFS2: Use resizable hash table for glocks",
glocks were freed via call_rcu to allow reading the glock hashtable
locklessly using rcu.  This was then changed to free glocks immediately,
which made reading the glock hashtable unsafe.  Bring back the original
code for freeing glocks via call_rcu.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Andreas Gruenbacher 2017-07-07 13:22:05 -05:00 • committed by Greg Kroah-Hartman

parent f59d04e342

commit 25b2ee6f9d

2 changed files with 10 additions and 2 deletions

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11

fs/gfs2/glock.c

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1

fs/gfs2/incore.h

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