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Subject[PATCH v2 2/6] NFS; simlify and clean cache library
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This is a cleanup patch.
Such helpers like nfs_cache_init() and nfs_cache_destroy() are redundant,
because they are just a wrappers around sunrpc_init_cache_detail() and
sunrpc_destroy_cache_detail() respectively.
So let's remove them completely and move corresponding logic to
nfs_cache_register_net() and nfs_cache_unregister_net() respectively (since
they are called together anyway).

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
---
fs/nfs/cache_lib.c | 12 +++---------
fs/nfs/cache_lib.h | 2 --
fs/nfs/dns_resolve.c | 6 +-----
3 files changed, 4 insertions(+), 16 deletions(-)

diff --git a/fs/nfs/cache_lib.c b/fs/nfs/cache_lib.c
index 862a2f1..5f7b053 100644
--- a/fs/nfs/cache_lib.c
+++ b/fs/nfs/cache_lib.c
@@ -128,10 +128,13 @@ int nfs_cache_register_net(struct net *net, struct cache_detail *cd)
struct super_block *pipefs_sb;
int ret = 0;

+ sunrpc_init_cache_detail(cd);
pipefs_sb = rpc_get_sb_net(net);
if (pipefs_sb) {
ret = nfs_cache_register_sb(pipefs_sb, cd);
rpc_put_sb_net(net);
+ if (ret)
+ sunrpc_destroy_cache_detail(cd);
}
return ret;
}
@@ -151,14 +154,5 @@ void nfs_cache_unregister_net(struct net *net, struct cache_detail *cd)
nfs_cache_unregister_sb(pipefs_sb, cd);
rpc_put_sb_net(net);
}
-}
-
-void nfs_cache_init(struct cache_detail *cd)
-{
- sunrpc_init_cache_detail(cd);
-}
-
-void nfs_cache_destroy(struct cache_detail *cd)
-{
sunrpc_destroy_cache_detail(cd);
}
diff --git a/fs/nfs/cache_lib.h b/fs/nfs/cache_lib.h
index 317db95..4116d2c 100644
--- a/fs/nfs/cache_lib.h
+++ b/fs/nfs/cache_lib.h
@@ -23,8 +23,6 @@ extern struct nfs_cache_defer_req *nfs_cache_defer_req_alloc(void);
extern void nfs_cache_defer_req_put(struct nfs_cache_defer_req *dreq);
extern int nfs_cache_wait_for_upcall(struct nfs_cache_defer_req *dreq);

-extern void nfs_cache_init(struct cache_detail *cd);
-extern void nfs_cache_destroy(struct cache_detail *cd);
extern int nfs_cache_register_net(struct net *net, struct cache_detail *cd);
extern void nfs_cache_unregister_net(struct net *net, struct cache_detail *cd);
extern int nfs_cache_register_sb(struct super_block *sb,
diff --git a/fs/nfs/dns_resolve.c b/fs/nfs/dns_resolve.c
index 5015447..499834b 100644
--- a/fs/nfs/dns_resolve.c
+++ b/fs/nfs/dns_resolve.c
@@ -375,14 +375,12 @@ int nfs_dns_resolver_cache_init(struct net *net)
if (IS_ERR(nn->nfs_dns_resolve))
return PTR_ERR(nn->nfs_dns_resolve);

- nfs_cache_init(nn->nfs_dns_resolve);
err = nfs_cache_register_net(net, nn->nfs_dns_resolve);
if (err)
goto err_reg;
return 0;

err_reg:
- nfs_cache_destroy(nn->nfs_dns_resolve);
cache_destroy_net(nn->nfs_dns_resolve, net);
return err;
}
@@ -390,10 +388,8 @@ err_reg:
void nfs_dns_resolver_cache_destroy(struct net *net)
{
struct nfs_net *nn = net_generic(net, nfs_net_id);
- struct cache_detail *cd = nn->nfs_dns_resolve;

- nfs_cache_unregister_net(net, cd);
- nfs_cache_destroy(cd);
+ nfs_cache_unregister_net(net, nn->nfs_dns_resolve);
cache_destroy_net(nn->nfs_dns_resolve, net);
}



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