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| author | Kinglong Mee <kinglongmee@gmail.com> | 2014-03-24 11:59:46 +0800 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2014-03-30 10:47:36 -0400 |
| commit | d531c008d7d9713456abe3d265fc577bba2e1cef (patch) | |
| tree | eea8a68155e98ba647ba006d24df0efd3ecf3a49 /include/linux/sunrpc/xprt.h | |
| parent | 83ddfebdd21da669918d7f9854fd592858625f4b (diff) | |
| download | lwn-d531c008d7d9713456abe3d265fc577bba2e1cef.tar.gz lwn-d531c008d7d9713456abe3d265fc577bba2e1cef.zip | |
NFSD/SUNRPC: Check rpc_xprt out of xs_setup_bc_tcp
Besides checking rpc_xprt out of xs_setup_bc_tcp,
increase it's reference (it's important).
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'include/linux/sunrpc/xprt.h')
| -rw-r--r-- | include/linux/sunrpc/xprt.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index 8097b9df6773..3e5efb2b236e 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -295,13 +295,24 @@ int xprt_adjust_timeout(struct rpc_rqst *req); void xprt_release_xprt(struct rpc_xprt *xprt, struct rpc_task *task); void xprt_release_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task); void xprt_release(struct rpc_task *task); -struct rpc_xprt * xprt_get(struct rpc_xprt *xprt); void xprt_put(struct rpc_xprt *xprt); struct rpc_xprt * xprt_alloc(struct net *net, size_t size, unsigned int num_prealloc, unsigned int max_req); void xprt_free(struct rpc_xprt *); +/** + * xprt_get - return a reference to an RPC transport. + * @xprt: pointer to the transport + * + */ +static inline struct rpc_xprt *xprt_get(struct rpc_xprt *xprt) +{ + if (atomic_inc_not_zero(&xprt->count)) + return xprt; + return NULL; +} + static inline __be32 *xprt_skip_transport_header(struct rpc_xprt *xprt, __be32 *p) { return p + xprt->tsh_size; |