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Diffstat (limited to 'Documentation/filesystems/gfs2-glocks.rst')
| -rw-r--r-- | Documentation/filesystems/gfs2-glocks.rst | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/Documentation/filesystems/gfs2-glocks.rst b/Documentation/filesystems/gfs2-glocks.rst index d14f230f0b12..8a5842929b60 100644 --- a/Documentation/filesystems/gfs2-glocks.rst +++ b/Documentation/filesystems/gfs2-glocks.rst @@ -20,8 +20,7 @@ The gl_holders list contains all the queued lock requests (not just the holders) associated with the glock. If there are any held locks, then they will be contiguous entries at the head of the list. Locks are granted in strictly the order that they -are queued, except for those marked LM_FLAG_PRIORITY which are -used only during recovery, and even then only for journal locks. +are queued. There are three lock states that users of the glock layer can request, namely shared (SH), deferred (DF) and exclusive (EX). Those translate @@ -78,7 +77,7 @@ The minimum hold time for each lock is the time after a remote lock grant for which we ignore remote demote requests. This is in order to prevent a situation where locks are being bounced around the cluster from node to node with none of the nodes making any progress. This -tends to show up most with shared mmaped files which are being written +tends to show up most with shared mmapped files which are being written to by multiple nodes. By delaying the demotion in response to a remote callback, that gives the userspace program time to make some progress before the pages are unmapped. |