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path: root/fs/dlm/dir.c
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2014-02-14dlm: use INFO for recovery messagesDavid Teigland1-2/+2
The log messages relating to the progress of recovery are minimal and very often useful. Change these to the KERN_INFO level so they are always available. Signed-off-by: David Teigland <teigland@redhat.com>
2012-07-16dlm: use rsbtbl as resource directoryDavid Teigland1-218/+69
Remove the dir hash table (dirtbl), and use the rsb hash table (rsbtbl) as the resource directory. It has always been an unnecessary duplication of information. This improves efficiency by using a single rsbtbl lookup in many cases where both rsbtbl and dirtbl lookups were needed previously. This eliminates the need to handle cases of rsbtbl and dirtbl being out of sync. In many cases there will be memory savings because the dir hash table no longer exists. Signed-off-by: David Teigland <teigland@redhat.com>
2012-03-09dlm: fix slow rsb search in dir recoveryDavid Teigland1-0/+17
The function used to find an rsb during directory recovery was searching the single linear list of rsb's. This wasted a lot of time compared to using the standard hash table to find the rsb. Signed-off-by: David Teigland <teigland@redhat.com>
2012-01-04dlm: move recovery barrier callsDavid Teigland1-1/+0
Put all the calls to recovery barriers in the same function to clarify where they each happen. Should not change any behavior. Also modify some recovery debug lines to make them consistent. Signed-off-by: David Teigland <teigland@redhat.com>
2009-12-01dlm: always use GFP_NOFSDavid Teigland1-4/+3
Replace all GFP_KERNEL and ls_allocation with GFP_NOFS. ls_allocation would be GFP_KERNEL for userland lockspaces and GFP_NOFS for file system lockspaces. It was discovered that any lockspaces on the system can affect all others by triggering memory reclaim in the file system which could in turn call back into the dlm to acquire locks, deadlocking dlm threads that were shared by all lockspaces, like dlm_recv. Signed-off-by: David Teigland <teigland@redhat.com>
2009-05-15dlm: use more NOFS allocationDavid Teigland1-3/+4
Change some GFP_KERNEL allocations to use either GFP_NOFS or ls_allocation (when available) which the fs sets to GFP_NOFS. The point is to prevent allocations from going back into the cluster fs in places where that might lead to deadlock. Signed-off-by: David Teigland <teigland@redhat.com>
2009-01-28dlm: Change rwlock which is only used in write mode to a spinlockSteven Whitehouse1-9/+9
The ls_dirtbl[].lock was an rwlock, but since it was only used in write mode a spinlock will suffice. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com>
2008-12-23dlm: trivial annotation of be16 valueHarvey Harrison1-9/+9
fs/dlm/dir.c:419:14: warning: incorrect type in assignment (different base types) fs/dlm/dir.c:419:14: expected unsigned short [unsigned] [addressable] [assigned] [usertype] be_namelen fs/dlm/dir.c:419:14: got restricted __be16 [usertype] <noident> Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David Teigland <teigland@redhat.com>
2008-02-04dlm: fix dlm_dir_lookup() handling of too long namesAl Viro1-0/+3
... those can happen and BUG() from DLM_ASSERT() in allocate_direntry() is not a good way to handle them. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Teigland <teigland@redhat.com>
2008-02-04dlm: validate data in dlm_recover_directory()Al Viro1-3/+20
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Teigland <teigland@redhat.com>
2008-02-04dlm: use proper type for ->ls_recover_bufAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Teigland <teigland@redhat.com>
2008-01-30dlm: keep cached master rsbs during recoveryDavid Teigland1-34/+32
To prevent the master of an rsb from changing rapidly, an unused rsb is kept on the "toss list" for a period of time to be reused. The toss list was being cleared completely for each recovery, which is unnecessary. Much of the benefit of the toss list can be maintained if nodes keep rsb's in their toss list that they are the master of. These rsb's need to be included when the resource directory is rebuilt during recovery. Signed-off-by: David Teigland <teigland@redhat.com>
2008-01-30dlm: use dlm prefix on alloc and free functionsDavid Teigland1-5/+5
The dlm functions in memory.c should use the dlm_ prefix. Also, use kzalloc/kfree directly for dlm_direntry's, removing the wrapper functions. Signed-off-by: David Teigland <teigland@redhat.com>
2006-01-20[DLM] Update DLM to the latest patch levelDavid Teigland1-2/+2
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 Teigland1-0/+423
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>
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