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NFS: remove RPC PipeFS mount point references from NFS cache routines

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This is a cleanup patch. We don't need this reference anymore, because DNS
resolver cache now creates it's dentries in per-net operations and on PipeFS
mount/umount notification.
Note that nfs_cache_register_net() now returns 0 instead of -ENOENT in case of
PiepFS superblock absence. This is ok, Dns resolver cache will be regestered on
PipeFS mount event.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Stanislav Kinsbursky 2011-11-25 17:13:20 +03:00 • committed by Trond Myklebust
parent 9df69c81b4
commit 39cb67b9a0
1 changed files with 4 additions and 15 deletions
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19
fs/nfs/cache_lib.c
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@ -126,24 +126,14 @@ int nfs_cache_register_sb(struct super_block *sb, struct cache_detail *cd)
int nfs_cache_register_net(struct net *net, struct cache_detail *cd) int nfs_cache_register_net(struct net *net, struct cache_detail *cd)
{ {
struct vfsmount *mnt;
struct super_block *pipefs_sb; struct super_block *pipefs_sb;
int ret; int ret = 0;
mnt = rpc_get_mount();
if (IS_ERR(mnt))
return PTR_ERR(mnt);
pipefs_sb = rpc_get_sb_net(net); pipefs_sb = rpc_get_sb_net(net);
if (!pipefs_sb) { if (pipefs_sb) {
ret = -ENOENT; ret = nfs_cache_register_sb(pipefs_sb, cd);
goto err; rpc_put_sb_net(net);
} }
ret = nfs_cache_register_sb(pipefs_sb, cd);
rpc_put_sb_net(net);
if (!ret)
return ret;
err:
rpc_put_mount();
return ret; return ret;
} }
@ -162,7 +152,6 @@ void nfs_cache_unregister_net(struct net *net, struct cache_detail *cd)
nfs_cache_unregister_sb(pipefs_sb, cd); nfs_cache_unregister_sb(pipefs_sb, cd);
rpc_put_sb_net(net); rpc_put_sb_net(net);
} }
rpc_put_mount();
} }
void nfs_cache_init(struct cache_detail *cd) void nfs_cache_init(struct cache_detail *cd)