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| author | Stanislav Kinsbursky <skinsbursky@parallels.com> | 2011-12-26 15:39:39 +0300 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-01-31 18:20:24 -0500 |
| commit | c21a588f35b1c50304e505fad542b3aab0814266 (patch) | |
| tree | 2dda83e8d5f62eb9892c425941265aeeb278e952 /net/sunrpc/netns.h | |
| parent | 90c4e82999c517e0cd00d0782c68d186cb18b784 (diff) | |
| download | linux-c21a588f35b1c50304e505fad542b3aab0814266.tar.bz2 | |
SUNRPC: pipefs per-net operations helper introduced
During per-net pipes creation and destruction we have to make sure, that pipefs
sb exists for the whole creation/destruction cycle. This is done by using
special mutex which controls pipefs sb reference on network namespace context.
Helper consists of two parts: first of them (rpc_get_dentry_net) searches for
dentry with specified name and returns with mutex taken on success. When pipe
creation or destructions is completed, caller should release this mutex by
rpc_put_dentry_net call.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/netns.h')
| -rw-r--r-- | net/sunrpc/netns.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sunrpc/netns.h b/net/sunrpc/netns.h index b3842529aec9..11d2f4863403 100644 --- a/net/sunrpc/netns.h +++ b/net/sunrpc/netns.h @@ -11,6 +11,7 @@ struct sunrpc_net { struct cache_detail *ip_map_cache; struct super_block *pipefs_sb; + struct mutex pipefs_sb_lock; }; extern int sunrpc_net_id; |