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authorPeng Tao <tao.peng@primarydata.com>2014-11-05 22:36:50 +0800
committerTrond Myklebust <trond.myklebust@primarydata.com>2014-11-12 14:22:51 -0500
commit8c393f9a721c30a030049a680e1bf896669bb279 (patch)
tree391e4b574115434947a4f94e9cfcac72553fedc8 /fs/nfs/direct.c
parentdca780016dab84d6ac500b1d84fdfe1628802a59 (diff)
downloadop-kernel-dev-8c393f9a721c30a030049a680e1bf896669bb279.zip
op-kernel-dev-8c393f9a721c30a030049a680e1bf896669bb279.tar.gz
nfs: fix pnfs direct write memory leak
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. Cc: stable@vger.kernel.org [v3.4+] Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/direct.c')
-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 20cffc8..10bf072 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -266,6 +266,7 @@ 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)
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