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SubjectRe: [PATCH v2 2/6] NFS; simlify and clean cache library
On Mon, Feb 04, 2013 at 02:02:40PM +0300, Stanislav Kinsbursky wrote:
> 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).

Ditto for this one--Trond, any objection?

--b.

>
> 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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