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[PATCH] knfsd: simplify nlmsvc_invalidate_all 

As a result of previous patches, the loop in nlmsvc_invalidate_all just sets
h_expires for all client/hosts to 0 (though does it in a very complicated
way).

This was possibly meant to trigger early garbage collection but half the time
'0' is in the future and so it infact delays garbage collection.

Pre-aging the 'hosts' is not really needed at this point anyway so we throw
out the loop and nlm_find_client which is no longer needed.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown 2006-10-04 02:16:00 -07:00 committed by Linus Torvalds
parent c53c1bb94f
commit 350fce8dbf
3 changed files with 2 additions and 39 deletions
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27
fs/lockd/host.c
View File

@ -192,33 +192,6 @@ nlm_destroy_host(struct nlm_host *host)
kfree(host); kfree(host);
} }
struct nlm_host *
nlm_find_client(void)
{
struct hlist_head *chain;
struct hlist_node *pos;
/* find a nlm_host for a client for which h_killed == 0.
* and return it
*/
mutex_lock(&nlm_host_mutex);
for (chain = nlm_hosts; chain < nlm_hosts + NLM_HOST_NRHASH; ++chain) {
struct nlm_host *host;
hlist_for_each_entry(host, pos, chain, h_hash) {
if (host->h_server &&
host->h_killed == 0) {
nlm_get_host(host);
mutex_unlock(&nlm_host_mutex);
return host;
}
}
}
mutex_unlock(&nlm_host_mutex);
return NULL;
}
/* /*
* Create the NLM RPC client for an NLM peer * Create the NLM RPC client for an NLM peer
*/ */

10
fs/lockd/svcsubs.c
View File

@ -354,13 +354,11 @@ nlmsvc_free_host_resources(struct nlm_host *host)
} }
/* /*
* delete all hosts structs for clients * Remove all locks held for clients
*/ */
void void
nlmsvc_invalidate_all(void) nlmsvc_invalidate_all(void)
{ {
struct nlm_host *host;
/* Release all locks held by NFS clients. /* Release all locks held by NFS clients.
* Previously, the code would call * Previously, the code would call
* nlmsvc_free_host_resources for each client in * nlmsvc_free_host_resources for each client in
@ -368,10 +366,4 @@ nlmsvc_invalidate_all(void)
* Now we just do it once in nlm_traverse_files. * Now we just do it once in nlm_traverse_files.
*/ */
nlm_traverse_files(NULL, nlmsvc_is_client); nlm_traverse_files(NULL, nlmsvc_is_client);
while ((host = nlm_find_client()) != NULL) {
host->h_expires = 0;
host->h_killed = 1;
nlm_release_host(host);
}
} }

4
include/linux/lockd/lockd.h
View File

@ -45,8 +45,7 @@ struct nlm_host {
unsigned short h_proto; /* transport proto */ unsigned short h_proto; /* transport proto */
unsigned short h_reclaiming : 1, unsigned short h_reclaiming : 1,
h_server : 1, /* server side, not client side */ h_server : 1, /* server side, not client side */
h_inuse : 1, h_inuse : 1;
h_killed : 1;
wait_queue_head_t h_gracewait; /* wait while reclaiming */ wait_queue_head_t h_gracewait; /* wait while reclaiming */
struct rw_semaphore h_rwsem; /* Reboot recovery lock */ struct rw_semaphore h_rwsem; /* Reboot recovery lock */
u32 h_state; /* pseudo-state counter */ u32 h_state; /* pseudo-state counter */
@ -169,7 +168,6 @@ void nlm_rebind_host(struct nlm_host *);
struct nlm_host * nlm_get_host(struct nlm_host *); struct nlm_host * nlm_get_host(struct nlm_host *);
void nlm_release_host(struct nlm_host *); void nlm_release_host(struct nlm_host *);
void nlm_shutdown_hosts(void); void nlm_shutdown_hosts(void);
extern struct nlm_host *nlm_find_client(void);
extern void nlm_host_rebooted(const struct sockaddr_in *, const char *, int, u32); extern void nlm_host_rebooted(const struct sockaddr_in *, const char *, int, u32);
struct nsm_handle *nsm_find(const struct sockaddr_in *, const char *, int); struct nsm_handle *nsm_find(const struct sockaddr_in *, const char *, int);
void nsm_release(struct nsm_handle *); void nsm_release(struct nsm_handle *);