This is a note to let you know that I've just added the patch titled
nfs: tear down caches in nfs_init_writepagecache when allocation fails
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nfs-tear-down-caches-in-nfs_init_writepagecache-when-allocation-fails.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c52f6cc5d3e4dcb9167448614338a25a31573484 Mon Sep 17 00:00:00 2001
From: Jeff Layton <jlayton@xxxxxxxxxx>
Date: Thu, 2 Aug 2012 14:30:56 -0400
Subject: nfs: tear down caches in nfs_init_writepagecache when allocation fails
From: Jeff Layton <jlayton@xxxxxxxxxx>
commit 3dd4765fce04c0b4af1e0bc4c0b10f906f95fabc upstream.
...and ensure that we tear down the nfs_commit_data cache too when
unloading the module.
Cc: Bryan Schumaker <bjschuma@xxxxxxxxxx>
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
Signed-off-by: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
[bwh: Backported to 3.2: drop the nfs_cdata_cachep cleanup; it doesn't exist]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: Li Zefan <lizefan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/nfs/write.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1751,12 +1751,12 @@ int __init nfs_init_writepagecache(void)
nfs_wdata_mempool = mempool_create_slab_pool(MIN_POOL_WRITE,
nfs_wdata_cachep);
if (nfs_wdata_mempool == NULL)
- return -ENOMEM;
+ goto out_destroy_write_cache;
nfs_commit_mempool = mempool_create_slab_pool(MIN_POOL_COMMIT,
nfs_wdata_cachep);
if (nfs_commit_mempool == NULL)
- return -ENOMEM;
+ goto out_destroy_write_mempool;
/*
* NFS congestion size, scale with available memory.
@@ -1779,6 +1779,12 @@ int __init nfs_init_writepagecache(void)
nfs_congestion_kb = 256*1024;
return 0;
+
+out_destroy_write_mempool:
+ mempool_destroy(nfs_wdata_mempool);
+out_destroy_write_cache:
+ kmem_cache_destroy(nfs_wdata_cachep);
+ return -ENOMEM;
}
void nfs_destroy_writepagecache(void)
Patches currently in stable-queue which might be from jlayton@xxxxxxxxxx are
queue-3.4/nfs-tear-down-caches-in-nfs_init_writepagecache-when-allocation-fails.patch
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