kernel/git/stable/linux.git/fs/lockd/host.c, branch linux-2.6.18.y

NLM: Fix reclaim races

2006-06-09T13:40:27+00:00

Currently it is possible for a task to remove its locks at the same time as the NLM recovery thread is trying to recover them. This quickly leads to an Oops. Protect the locks using an rw semaphore while they are being recovered. Signed-off-by: Trond Myklebust

NLM: sem to mutex conversion

2006-06-09T13:40:24+00:00

Signed-off-by: Trond Myklebust

[PATCH] sem2mutex: fs/

2006-03-26T16:56:55+00:00

Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by: Ingo Molnar Cc: Eric Van Hensbergen Cc: Robert Love Cc: Thomas Gleixner Cc: David Woodhouse Cc: Neil Brown Cc: Trond Myklebust Cc: Dave Kleikamp Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

lockd: Fix Oopses due to list manipulation errors.

2006-03-20T18:44:41+00:00

The patch "stop abusing file_lock_list introduces a couple of bugs since the locks may be copied and need to be removed from the lists when they are destroyed. Signed-off-by: Trond Myklebust

lockd: stop abusing file_lock_list

2006-03-20T18:44:40+00:00

Currently lockd directly access the file_lock_list from fs/locks.c. It does so to mark locks granted or reclaimable. This is very suboptimal, because a) lockd needs to poke into locks.c internals, and b) it needs to iterate over all locks in the system for marking locks granted or reclaimable. This patch adds lists for granted and reclaimable locks to the nlm_host structure instead, and adds locks to those. nlmclnt_lock: now adds the lock to h_granted instead of setting the NFS_LCK_GRANTED, still O(1) nlmclnt_mark_reclaim: goes away completely, replaced by a list_splice_init. Complexity reduced from O(locks in the system) to O(1) reclaimer: iterates over h_reclaim now, complexity reduced from O(locks in the system) to O(locks per nlm_host) Signed-off-by: Christoph Hellwig Signed-off-by: Trond Myklebust

lockd: Make lockd use rpc_new_client() instead of rpc_create_client

2006-03-20T18:44:40+00:00

When doing NLM_GRANTED requests, lockd may end up blocking if we use rpc_create_client() due to the synchronous call to rpc_ping(). Instead, use rpc_new_client(). Signed-off-by: Trond Myklebust

SUNRPC: new interface to force an RPC rebind

2006-01-06T19:58:56+00:00

We'd like to hide fields in rpc_xprt and rpc_clnt from upper layer protocols. Start by creating an API to force RPC rebind, replacing logic that simply sets cl_port to zero. Test-plan: Destructive testing (unplugging the network temporarily). Connectathon with UDP and TCP. NFSv2/3 and NFSv4 mounting should be carefully checked. Probably need to rig a server where certain services aren't running, or that returns an error for some typical operation. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust

[PATCH] RPC: remove xprt->nocong

2005-09-23T16:38:47+00:00

Get rid of the "xprt->nocong" variable. Test-plan: Use WAN simulation to cause sporadic bursty packet loss with UDP mounts. Look for significant regression in performance or client stability. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust

[PATCH] RPC: get rid of xprt->stream

2005-09-23T16:38:35+00:00

Now we can fix up the last few places that use the "xprt->stream" variable, and get rid of it from the rpc_xprt structure. Test-plan: Destructive testing (unplugging the network temporarily). Connectathon with UDP and TCP. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust

[PATCH] RPC: Make rpc_create_client() probe server for RPC program+version support

2005-06-22T20:07:04+00:00

Ensure that we don't create an RPC client without checking that the server does indeed support the RPC program + version that we are trying to set up. This enables us to immediately return an error to "mount" if it turns out that the server is only supporting NFSv2, when we requested NFSv3 or NFSv4. Signed-off-by: Trond Myklebust