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path: root/fs/dlm/lock.c
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2006-09-25[GFS2/DLM] Fix trailing whitespaceSteven Whitehouse
As per Andrew Morton's request, removed trailing whitespace. Cc: Andrew Morton <akpm@osdl.org> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-09-08[DLM] confirm master for recovered waiting requestsDavid Teigland
Fixing the following scenario: - A request is on the waiters list waiting for a reply from a remote node. - The request is the first one on the resource, so first_lkid is set. - The remote node fails causing recovery. - During recovery the requesting node becomes master. - The request is now processed locally instead of being a remote operation. - At this point we need to call confirm_master() on the resource since we're certain we're now the master node. This will clear first_lkid. - We weren't calling confirm_master(), so first_lkid was not being cleared causing subsequent requests on that resource to get stuck. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-08-23[DLM] down conversion clearing flagsDavid Teigland
The down-conversion optimization was resulting in the lkb flags being cleared because the stub message reply had no flags value set. Copy the current flags into the stub message so they'll be copied back into the lkb as part of processing the fake reply. Also add an assertion to catch this error more directly if it exists elsewhere. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-08-23[DLM] down conversion clearing flagsPatrick Caulfield
Oh, and here's (hopefully) the last of these ua_tmp patches. I think I've caught all the paths now. Sorry it didn't make the last one. Signed-off-by: Patrick Caulfield <pcaulfie@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-08-23[DLM] preserve lksb address in user conversionsPatrick Caulfield
This patch fixes bz#203444 where the LKSB was lost during userland conversion operations Signed-off-by: Patrick Caulfield <pcaulfie@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-08-21[DLM] dump rsb and locks on assertDavid Teigland
Introduce new function dlm_dump_rsb() to call within assertions instead of dlm_print_rsb(). The new function dumps info about all locks on the rsb in addition to rsb details. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-08-08[DLM] fix userland unlockPatrick Caulfield
This patch fixes the userland DLM unlock code so that it correctly returns the address of the userland lock status block in its completion AST. It fixes bug #201348 Patrick Signed-Off-By: Patrick Caulfield <pcaulfie@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-07-26[DLM] schedule during long loop through locksDavid Teigland
The loop through all waiting locks in recover_waiters can potentially be long, so we should schedule explicitly. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-07-26[DLM] fix loop in grant_after_purgeDavid Teigland
The loop in grant_after_purge is intended to find all rsb's in each hash bucket that have the LOCKS_PURGED flag set. The loop was quitting the current bucket after finding just one rsb instead of going until there are no more. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-07-20[DLM] fix leaking user locksDavid Teigland
User NOQUEUE lock requests to a remote node that failed with -EAGAIN were never being removed from a process's list of locks. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-07-20[DLM] [RFC: -mm patch] fs/dlm/lock.c: unexport dlm_lvb_operationsAdrian Bunk
On Thu, Jul 13, 2006 at 10:48:00PM -0700, Andrew Morton wrote: >... > Changes since 2.6.18-rc1-mm1: >... > git-gfs2.patch >... > git trees. >... This patch removes the unused EXPORT_SYMBOL_GPL(dlm_lvb_operations). Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-07-13[DLM] dlm: user locksDavid Teigland
This changes the way the dlm handles user locks. The core dlm is now aware of user locks so they can be dealt with more efficiently. There is no more dlm_device module which previously managed its own duplicate copy of every user lock. Signed-off-by: Patrick Caulfield <pcaulfie@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-05-02[DLM] fix grant_after_purge softlockupDavid Teigland
In dlm_grant_after_purge() we were holding a hash table read_lock while calling put_rsb() which potentially removes the rsb from the hash table, taking the same lock in write. Fix this by flagging rsb's ahead of time that have been purged. Then iteratively read_lock the hash table, find a flagged rsb, unlock, process rsb. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-02-28[DLM] Pass in lockspace to lkb put functionDavid Teigland
In some cases a lockspace isn't attached to the lkb, so that it needs to be passed directly to the lkb put function. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-02-23[DLM] Remove range locks from the DLMDavid Teigland
This patch removes support for range locking from the DLM Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2006-01-20[DLM] Update DLM to the latest patch levelDavid Teigland
Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steve Whitehouse <swhiteho@redhat.com>
2006-01-18[DLM] The core of the DLM for GFS2/CLVMDavid Teigland
This is the core of the distributed lock manager which is required to use GFS2 as a cluster filesystem. It is also used by CLVM and can be used as a standalone lock manager independantly of either of these two projects. It implements VAX-style locking modes. Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Steve Whitehouse <swhiteho@redhat.com>