fs/xfs/quota: Add missing mutex_unlock

[safe/jmp/linux-2.6] / fs / select.c

diff --git a/fs/select.c b/fs/select.c
index 8084834..500a669 100644 (file)
--- a/fs/select.c
+++ b/fs/select.c
@@ -15,6 +15,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/sched.h>
 #include <linux/syscalls.h>
 #include <linux/module.h>
 #include <linux/slab.h>
@@ -41,22 +42,28 @@
  * better solutions..
  */
 
+#define MAX_SLACK      (100 * NSEC_PER_MSEC)
+
 static long __estimate_accuracy(struct timespec *tv)
 {
        long slack;
        int divfactor = 1000;
 
+       if (tv->tv_sec < 0)
+               return 0;
+
        if (task_nice(current) > 0)
                divfactor = divfactor / 5;
 
+       if (tv->tv_sec > MAX_SLACK / (NSEC_PER_SEC/divfactor))
+               return MAX_SLACK;
+
        slack = tv->tv_nsec / divfactor;
        slack += tv->tv_sec * (NSEC_PER_SEC/divfactor);
 
-       if (slack > 100 * NSEC_PER_MSEC)
-               slack =  100 * NSEC_PER_MSEC;
+       if (slack > MAX_SLACK)
+               return MAX_SLACK;
 
-       if (slack < 0)
-               slack = 0;
        return slack;
 }
 
@@ -684,6 +691,23 @@ SYSCALL_DEFINE6(pselect6, int, n, fd_set __user *, inp, fd_set __user *, outp,
 }
 #endif /* HAVE_SET_RESTORE_SIGMASK */
 
+#ifdef __ARCH_WANT_SYS_OLD_SELECT
+struct sel_arg_struct {
+       unsigned long n;
+       fd_set __user *inp, *outp, *exp;
+       struct timeval __user *tvp;
+};
+
+SYSCALL_DEFINE1(old_select, struct sel_arg_struct __user *, arg)
+{
+       struct sel_arg_struct a;
+
+       if (copy_from_user(&a, arg, sizeof(a)))
+               return -EFAULT;
+       return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
+}
+#endif
+
 struct poll_list {
        struct poll_list *next;
        int len;
@@ -814,7 +838,7 @@ int do_sys_poll(struct pollfd __user *ufds, unsigned int nfds,
        struct poll_list *walk = head;
        unsigned long todo = nfds;
 
-       if (nfds > current->signal->rlim[RLIMIT_NOFILE].rlim_cur)
+       if (nfds > rlimit(RLIMIT_NOFILE))
                return -EINVAL;
 
        len = min_t(unsigned int, nfds, N_STACK_PPS);