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authorPeng Tao <tao.peng@primarydata.com>2014-11-05 22:36:50 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-11-21 09:22:53 -0800
commit32049712c4d803139fecf7a59cfa3e24c8456d03 (patch)
tree0952713e25a49a9d4241d458739edba68e23fc37 /fs/nfs
parent562e494829ef4d54cf9c6c0676038dac3e2917af (diff)
downloadlinux-linaro-stable-32049712c4d803139fecf7a59cfa3e24c8456d03.tar.gz
nfs: fix pnfs direct write memory leak
commit 8c393f9a721c30a030049a680e1bf896669bb279 upstream. For pNFS direct writes, layout driver may dynamically allocate ds_cinfo.buckets. So we need to take care to free them when freeing dreq. Ideally this needs to be done inside layout driver where ds_cinfo.buckets are allocated. But buckets are attached to dreq and reused across LD IO iterations. So I feel it's OK to free them in the generic layer. Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/direct.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 0bd7a55a5f07..725e87538c98 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -180,6 +180,7 @@ static void nfs_direct_req_free(struct kref *kref)
{
struct nfs_direct_req *dreq = container_of(kref, struct nfs_direct_req, kref);
+ nfs_free_pnfs_ds_cinfo(&dreq->ds_cinfo);
if (dreq->l_ctx != NULL)
nfs_put_lock_context(dreq->l_ctx);
if (dreq->ctx != NULL)