diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-19 17:24:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-19 17:24:05 -0700 |
| commit | 6a6be470c3071559970c5659354484d4f664050e (patch) | |
| tree | d4b335e863e426acad96fe5e4bce2e3e064abc32 /net/sunrpc/auth.c | |
| parent | 98c89cdd3a292af3451e47a2a33132f5183861b0 (diff) | |
| parent | 126e216a8730532dfb685205309275f87e3d133e (diff) | |
Merge branch 'nfs-for-2.6.35' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
* 'nfs-for-2.6.35' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (78 commits)
SUNRPC: Don't spam gssd with upcall requests when the kerberos key expired
SUNRPC: Reorder the struct rpc_task fields
SUNRPC: Remove the 'tk_magic' debugging field
SUNRPC: Move the task->tk_bytes_sent and tk_rtt to struct rpc_rqst
NFS: Don't call iput() in nfs_access_cache_shrinker
NFS: Clean up nfs_access_zap_cache()
NFS: Don't run nfs_access_cache_shrinker() when the mask is GFP_NOFS
SUNRPC: Ensure rpcauth_prune_expired() respects the nr_to_scan parameter
SUNRPC: Ensure memory shrinker doesn't waste time in rpcauth_prune_expired()
SUNRPC: Dont run rpcauth_cache_shrinker() when gfp_mask is GFP_NOFS
NFS: Read requests can use GFP_KERNEL.
NFS: Clean up nfs_create_request()
NFS: Don't use GFP_KERNEL in rpcsec_gss downcalls
NFSv4: Don't use GFP_KERNEL allocations in state recovery
SUNRPC: Fix xs_setup_bc_tcp()
SUNRPC: Replace jiffies-based metrics with ktime-based metrics
ktime: introduce ktime_to_ms()
SUNRPC: RPC metrics and RTT estimator should use same RTT value
NFS: Calldata for nfs4_renew_done()
NFS: Squelch compiler warning in nfs_add_server_stats()
...
Diffstat (limited to 'net/sunrpc/auth.c')
| -rw-r--r-- | net/sunrpc/auth.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c index 95afe79dd9d7..73affb8624fa 100644 --- a/net/sunrpc/auth.c +++ b/net/sunrpc/auth.c @@ -236,10 +236,15 @@ rpcauth_prune_expired(struct list_head *free, int nr_to_scan) list_for_each_entry_safe(cred, next, &cred_unused, cr_lru) { - /* Enforce a 60 second garbage collection moratorium */ + if (nr_to_scan-- == 0) + break; + /* + * Enforce a 60 second garbage collection moratorium + * Note that the cred_unused list must be time-ordered. + */ if (time_in_range(cred->cr_expire, expired, jiffies) && test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags) != 0) - continue; + return 0; list_del_init(&cred->cr_lru); number_cred_unused--; @@ -252,13 +257,10 @@ rpcauth_prune_expired(struct list_head *free, int nr_to_scan) get_rpccred(cred); list_add_tail(&cred->cr_lru, free); rpcauth_unhash_cred_locked(cred); - nr_to_scan--; } spin_unlock(cache_lock); - if (nr_to_scan == 0) - break; } - return nr_to_scan; + return (number_cred_unused / 100) * sysctl_vfs_cache_pressure; } /* @@ -270,11 +272,12 @@ rpcauth_cache_shrinker(int nr_to_scan, gfp_t gfp_mask) LIST_HEAD(free); int res; + if ((gfp_mask & GFP_KERNEL) != GFP_KERNEL) + return (nr_to_scan == 0) ? 0 : -1; if (list_empty(&cred_unused)) return 0; spin_lock(&rpc_credcache_lock); - nr_to_scan = rpcauth_prune_expired(&free, nr_to_scan); - res = (number_cred_unused / 100) * sysctl_vfs_cache_pressure; + res = rpcauth_prune_expired(&free, nr_to_scan); spin_unlock(&rpc_credcache_lock); rpcauth_destroy_credlist(&free); return res; |