#include <linux/personality.h> /* for STICKY_TIMEOUTS */
#include <linux/file.h>
#include <linux/fs.h>
+#include <linux/rcupdate.h>
#include <asm/uaccess.h>
* as all select/poll functions have to call it to add an entry to the
* poll table.
*/
-void __pollwait(struct file *filp, wait_queue_head_t *wait_address, poll_table *p);
+static void __pollwait(struct file *filp, wait_queue_head_t *wait_address,
+ poll_table *p);
void poll_initwait(struct poll_wqueues *pwq)
{
EXPORT_SYMBOL(poll_freewait);
-void __pollwait(struct file *filp, wait_queue_head_t *wait_address, poll_table *_p)
+static void __pollwait(struct file *filp, wait_queue_head_t *wait_address,
+ poll_table *_p)
{
struct poll_wqueues *p = container_of(_p, struct poll_wqueues, pt);
struct poll_table_page *table = p->table;
unsigned long *open_fds;
unsigned long set;
int max;
+ struct fdtable *fdt;
/* handle last in-complete long-word first */
set = ~(~0UL << (n & (__NFDBITS-1)));
n /= __NFDBITS;
- open_fds = current->files->open_fds->fds_bits+n;
+ fdt = files_fdtable(current->files);
+ open_fds = fdt->open_fds->fds_bits+n;
max = 0;
if (set) {
set &= BITS(fds, n);
int retval, i;
long __timeout = *timeout;
- spin_lock(¤t->files->file_lock);
+ rcu_read_lock();
retval = max_select_fd(n, fds);
- spin_unlock(¤t->files->file_lock);
+ rcu_read_unlock();
if (retval < 0)
return retval;
char *bits;
long timeout;
int ret, size, max_fdset;
+ struct fdtable *fdt;
timeout = MAX_SCHEDULE_TIMEOUT;
if (tvp) {
goto out_nofds;
/* max_fdset can increase, so grab it once to avoid race */
- max_fdset = current->files->max_fdset;
+ rcu_read_lock();
+ fdt = files_fdtable(current->files);
+ max_fdset = fdt->max_fdset;
+ rcu_read_unlock();
if (n > max_fdset)
n = max_fdset;
unsigned int i;
struct poll_list *head;
struct poll_list *walk;
+ struct fdtable *fdt;
+ int max_fdset;
/* Do a sanity check on nfds ... */
- if (nfds > current->files->max_fdset && nfds > OPEN_MAX)
+ rcu_read_lock();
+ fdt = files_fdtable(current->files);
+ max_fdset = fdt->max_fdset;
+ rcu_read_unlock();
+ if (nfds > max_fdset && nfds > OPEN_MAX)
return -EINVAL;
if (timeout) {