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NFS: DNS resolver cache per network namespace context introduced

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This patch implements DNS resolver cache creation and registration for each
alive network namespace context.
This was done by registering NFS per-net operations, responsible for DNS cache
allocation/register and unregister/destructioning instead of initialization and
destruction of static "nfs_dns_resolve" cache detail (this one was removed).
Pointer to network dns resolver cache is stored in new per-net "nfs_net"
structure.
This patch also changes nfs_dns_resolve_name() function prototype (and it's
calls) by adding network pointer parameter, which is used to get proper DNS
resolver cache pointer for do_cache_lookup_wait() call.

Note: empty nfs_dns_resolver_init() and nfs_dns_resolver_destroy() functions
will be used in next patch in the series.

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 17:13:04 +03:00 • committed by Trond Myklebust
parent 5c1cacb175
commit 1b340d0118
5 changed files with 123 additions and 41 deletions
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13
fs/nfs/netns.h Normal file
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#ifndef __NFS_NETNS_H__
#define __NFS_NETNS_H__
#include <net/net_namespace.h>
#include <net/netns/generic.h>
struct nfs_net {
struct cache_detail *nfs_dns_resolve;
};
extern int nfs_net_id;
#endif