X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=fs%2Fselect.c;h=a974082b0824a8a9935abd42c3471b50a9755410;hb=5351fb106a84d6ac584c2501e3b335093d38a58c;hp=33b72ba0f86f45790bd7661053266cd8336c9757;hpb=55b4d6a52195a8f277ffddf755ddaff359878f41;p=powerpc.git

diff --git a/fs/select.c b/fs/select.c
index 33b72ba0f8..a974082b08 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -14,10 +14,10 @@
  *     of fds to overcome nfds < 16390 descriptors limit (Tigran Aivazian).
  */
 
+#include <linux/kernel.h>
 #include <linux/syscalls.h>
 #include <linux/module.h>
 #include <linux/slab.h>
-#include <linux/smp_lock.h>
 #include <linux/poll.h>
 #include <linux/personality.h> /* for STICKY_TIMEOUTS */
 #include <linux/file.h>
@@ -26,7 +26,6 @@
 
 #include <asm/uaccess.h>
 
-#define ROUND_UP(x,y) (((x)+(y)-1)/(y))
 #define DEFAULT_POLLMASK (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM)
 
 struct poll_table_page {
@@ -65,7 +64,7 @@ EXPORT_SYMBOL(poll_initwait);
 
 static void free_poll_entry(struct poll_table_entry *entry)
 {
-	remove_wait_queue(entry->wait_address,&entry->wait);
+	remove_wait_queue(entry->wait_address, &entry->wait);
 	fput(entry->filp);
 }
 
@@ -129,7 +128,7 @@ static void __pollwait(struct file *filp, wait_queue_head_t *wait_address,
 	entry->filp = filp;
 	entry->wait_address = wait_address;
 	init_waitqueue_entry(&entry->wait, current);
-	add_wait_queue(wait_address,&entry->wait);
+	add_wait_queue(wait_address, &entry->wait);
 }
 
 #define FDS_IN(fds, n)		(fds->in + n)
@@ -311,7 +310,7 @@ static int core_sys_select(int n, fd_set __user *inp, fd_set __user *outp,
 {
 	fd_set_bits fds;
 	void *bits;
-	int ret, max_fdset;
+	int ret, max_fds;
 	unsigned int size;
 	struct fdtable *fdt;
 	/* Allocate small arguments on the stack to save memory and be faster */
@@ -321,13 +320,13 @@ static int core_sys_select(int n, fd_set __user *inp, fd_set __user *outp,
 	if (n < 0)
 		goto out_nofds;
 
-	/* max_fdset can increase, so grab it once to avoid race */
+	/* max_fds can increase, so grab it once to avoid race */
 	rcu_read_lock();
 	fdt = files_fdtable(current->files);
-	max_fdset = fdt->max_fdset;
+	max_fds = fdt->max_fds;
 	rcu_read_unlock();
-	if (n > max_fdset)
-		n = max_fdset;
+	if (n > max_fds)
+		n = max_fds;
 
 	/*
 	 * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
@@ -399,7 +398,7 @@ asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
 		if ((u64)tv.tv_sec >= (u64)MAX_INT64_SECONDS)
 			timeout = -1;	/* infinite */
 		else {
-			timeout = ROUND_UP(tv.tv_usec, USEC_PER_SEC/HZ);
+			timeout = DIV_ROUND_UP(tv.tv_usec, USEC_PER_SEC/HZ);
 			timeout += tv.tv_sec * HZ;
 		}
 	}
@@ -454,7 +453,7 @@ asmlinkage long sys_pselect7(int n, fd_set __user *inp, fd_set __user *outp,
 		if ((u64)ts.tv_sec >= (u64)MAX_INT64_SECONDS)
 			timeout = -1;	/* infinite */
 		else {
-			timeout = ROUND_UP(ts.tv_nsec, NSEC_PER_SEC/HZ);
+			timeout = DIV_ROUND_UP(ts.tv_nsec, NSEC_PER_SEC/HZ);
 			timeout += ts.tv_sec * HZ;
 		}
 	}
@@ -658,8 +657,6 @@ int do_sys_poll(struct pollfd __user *ufds, unsigned int nfds, s64 *timeout)
  	unsigned int i;
 	struct poll_list *head;
  	struct poll_list *walk;
-	struct fdtable *fdt;
-	int max_fdset;
 	/* Allocate small arguments on the stack to save memory and be
 	   faster - use long to make sure the buffer is aligned properly
 	   on 64 bit archs to avoid unaligned access */
@@ -667,11 +664,7 @@ int do_sys_poll(struct pollfd __user *ufds, unsigned int nfds, s64 *timeout)
 	struct poll_list *stack_pp = NULL;
 
 	/* Do a sanity check on nfds ... */
-	rcu_read_lock();
-	fdt = files_fdtable(current->files);
-	max_fdset = fdt->max_fdset;
-	rcu_read_unlock();
-	if (nfds > max_fdset && nfds > OPEN_MAX)
+	if (nfds > current->signal->rlim[RLIMIT_NOFILE].rlim_cur)
 		return -EINVAL;
 
 	poll_initwait(&table);
@@ -782,7 +775,7 @@ asmlinkage long sys_ppoll(struct pollfd __user *ufds, unsigned int nfds,
 		if ((u64)ts.tv_sec >= (u64)MAX_INT64_SECONDS)
 			timeout = -1;	/* infinite */
 		else {
-			timeout = ROUND_UP(ts.tv_nsec, NSEC_PER_SEC/HZ);
+			timeout = DIV_ROUND_UP(ts.tv_nsec, NSEC_PER_SEC/HZ);
 			timeout += ts.tv_sec * HZ;
 		}
 	}