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| author | Peng Tao <tao.peng@primarydata.com> | 2014-11-05 22:36:50 +0800 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2014-11-12 14:22:51 -0500 |
| commit | 8c393f9a721c30a030049a680e1bf896669bb279 (patch) | |
| tree | 391e4b574115434947a4f94e9cfcac72553fedc8 /include/linux/nfs_xdr.h | |
| parent | dca780016dab84d6ac500b1d84fdfe1628802a59 (diff) | |
| download | lwn-8c393f9a721c30a030049a680e1bf896669bb279.tar.gz lwn-8c393f9a721c30a030049a680e1bf896669bb279.zip | |
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 'include/linux/nfs_xdr.h')
| -rw-r--r-- | include/linux/nfs_xdr.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 983876f24aed..47ebb4fafd87 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1224,11 +1224,22 @@ struct nfs41_free_stateid_res { unsigned int status; }; +static inline void +nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo) +{ + kfree(cinfo->buckets); +} + #else struct pnfs_ds_commit_info { }; +static inline void +nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo) +{ +} + #endif /* CONFIG_NFS_V4_1 */ #ifdef CONFIG_NFS_V4_2 |