X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=fs%2Feventpoll.c;h=011b9b8c90c6976bb15e5bf50ffaf865fd31892b;hb=bca794785c2c12ecddeb09e70165b8ff80baa6ae;hp=ba2f9ec71192180647967f02fc1c4221c95c4a5a;hpb=7cb36b6ccdca03bd87e8faca7fd920643dd1aec7;p=linux-2.6-omap-h63xx.git

diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index ba2f9ec7119..011b9b8c90c 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -234,8 +234,6 @@ struct ep_pqueue {
 /*
  * Configuration options available inside /proc/sys/fs/epoll/
  */
-/* Maximum number of epoll devices, per user */
-static int max_user_instances __read_mostly;
 /* Maximum number of epoll watched descriptors, per user */
 static int max_user_watches __read_mostly;
 
@@ -260,14 +258,6 @@ static struct kmem_cache *pwq_cache __read_mostly;
 static int zero;
 
 ctl_table epoll_table[] = {
-	{
-		.procname	= "max_user_instances",
-		.data		= &max_user_instances,
-		.maxlen		= sizeof(int),
-		.mode		= 0644,
-		.proc_handler	= &proc_dointvec_minmax,
-		.extra1		= &zero,
-	},
 	{
 		.procname	= "max_user_watches",
 		.data		= &max_user_watches,
@@ -491,7 +481,6 @@ static void ep_free(struct eventpoll *ep)
 
 	mutex_unlock(&epmutex);
 	mutex_destroy(&ep->mtx);
-	atomic_dec(&ep->user->epoll_devs);
 	free_uid(ep->user);
 	kfree(ep);
 }
@@ -581,10 +570,6 @@ static int ep_alloc(struct eventpoll **pep)
 	struct eventpoll *ep;
 
 	user = get_current_user();
-	error = -EMFILE;
-	if (unlikely(atomic_read(&user->epoll_devs) >=
-			max_user_instances))
-		goto free_uid;
 	error = -ENOMEM;
 	ep = kzalloc(sizeof(*ep), GFP_KERNEL);
 	if (unlikely(!ep))
@@ -1141,7 +1126,6 @@ SYSCALL_DEFINE1(epoll_create1, int, flags)
 			      flags & O_CLOEXEC);
 	if (fd < 0)
 		ep_free(ep);
-	atomic_inc(&ep->user->epoll_devs);
 
 error_return:
 	DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_create(%d) = %d\n",
@@ -1366,8 +1350,10 @@ static int __init eventpoll_init(void)
 	struct sysinfo si;
 
 	si_meminfo(&si);
-	max_user_instances = 128;
-	max_user_watches = (((si.totalram - si.totalhigh) / 32) << PAGE_SHIFT) /
+	/*
+	 * Allows top 4% of lomem to be allocated for epoll watches (per user).
+	 */
+	max_user_watches = (((si.totalram - si.totalhigh) / 25) << PAGE_SHIFT) /
 		EP_ITEM_COST;
 
 	/* Initialize the structure used to perform safe poll wait head wake ups */