Merge with /home/shaggy/git/linus-clean/

1 files changed, 17 insertions, 27 deletions

diff --git a/fs/exec.c b/fs/exec.c
index c466fec5de20..055378d2513e 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -306,9 +306,6 @@ void install_arg_page(struct vm_area_struct *vma,
                         struct page *page, unsigned long address)
 {
         struct mm_struct *mm = vma->vm_mm;
-        pgd_t * pgd;
-        pud_t * pud;
-        pmd_t * pmd;
         pte_t * pte;
         spinlock_t *ptl;
 
@@ -316,14 +313,7 @@ void install_arg_page(struct vm_area_struct *vma,
                 goto out;
 
         flush_dcache_page(page);
-        pgd = pgd_offset(mm, address);
-        pud = pud_alloc(mm, pgd, address);
-        if (!pud)
-                goto out;
-        pmd = pmd_alloc(mm, pud, address);
-        if (!pmd)
-                goto out;
-        pte = pte_alloc_map_lock(mm, pmd, address, &ptl);
+        pte = get_locked_pte(mm, address, &ptl);
         if (!pte)
                 goto out;
         if (!pte_none(*pte)) {
@@ -334,7 +324,7 @@ void install_arg_page(struct vm_area_struct *vma,
         lru_cache_add_active(page);
         set_pte_at(mm, address, pte, pte_mkdirty(pte_mkwrite(mk_pte(
                                         page, vma->vm_page_prot))));
-        page_add_anon_rmap(page, vma, address);
+        page_add_new_anon_rmap(page, vma, address);
         pte_unmap_unlock(pte, ptl);
 
         /* no need for flush_tlb */
@@ -487,7 +477,7 @@ struct file *open_exec(const char *name)
         int err;
         struct file *file;
 
-        err = path_lookup_open(name, LOOKUP_FOLLOW, &nd, FMODE_READ);
+        err = path_lookup_open(AT_FDCWD, name, LOOKUP_FOLLOW, &nd, FMODE_READ);
         file = ERR_PTR(err);
 
         if (!err) {
@@ -585,7 +575,7 @@ static int exec_mmap(struct mm_struct *mm)
  * disturbing other processes.  (Other processes might share the signal
  * table via the CLONE_SIGHAND option to clone().)
  */
-static inline int de_thread(struct task_struct *tsk)
+static int de_thread(struct task_struct *tsk)
 {
         struct signal_struct *sig = tsk->signal;
         struct sighand_struct *newsighand, *oldsighand = tsk->sighand;
@@ -642,10 +632,10 @@ static inline int de_thread(struct task_struct *tsk)
                  * synchronize with any firing (by calling del_timer_sync)
                  * before we can safely let the old group leader die.
                  */
-                sig->real_timer.data = (unsigned long)current;
+                sig->real_timer.data = current;
                 spin_unlock_irq(lock);
-                if (del_timer_sync(&sig->real_timer))
-                        add_timer(&sig->real_timer);
+                if (hrtimer_cancel(&sig->real_timer))
+                        hrtimer_restart(&sig->real_timer);
                 spin_lock_irq(lock);
         }
         while (atomic_read(&sig->count) > count) {
@@ -668,7 +658,7 @@ static inline int de_thread(struct task_struct *tsk)
         if (!thread_group_leader(current)) {
                 struct task_struct *parent;
                 struct dentry *proc_dentry1, *proc_dentry2;
-                unsigned long exit_state, ptrace;
+                unsigned long ptrace;
 
                 /*
                  * Wait for the thread group leader to be a zombie.
@@ -726,15 +716,15 @@ static inline int de_thread(struct task_struct *tsk)
                 list_del(&current->tasks);
                 list_add_tail(&current->tasks, &init_task.tasks);
                 current->exit_signal = SIGCHLD;
-                exit_state = leader->exit_state;
+
+                BUG_ON(leader->exit_state != EXIT_ZOMBIE);
+                leader->exit_state = EXIT_DEAD;
 
                 write_unlock_irq(&tasklist_lock);
                 spin_unlock(&leader->proc_lock);
                 spin_unlock(&current->proc_lock);
                 proc_pid_flush(proc_dentry1);
                 proc_pid_flush(proc_dentry2);
-
-                BUG_ON(exit_state != EXIT_ZOMBIE);
         }
 
         /*
@@ -770,7 +760,7 @@ no_thread_group:
                 spin_lock(&oldsighand->siglock);
                 spin_lock(&newsighand->siglock);
 
-                current->sighand = newsighand;
+                rcu_assign_pointer(current->sighand, newsighand);
                 recalc_sigpending();
 
                 spin_unlock(&newsighand->siglock);
@@ -778,7 +768,7 @@ no_thread_group:
                 write_unlock_irq(&tasklist_lock);
 
                 if (atomic_dec_and_test(&oldsighand->count))
-                        kmem_cache_free(sighand_cachep, oldsighand);
+                        sighand_free(oldsighand);
         }
 
         BUG_ON(!thread_group_leader(current));
@@ -790,7 +780,7 @@ no_thread_group:
  * so that a new one can be started
  */
 
-static inline void flush_old_files(struct files_struct * files)
+static void flush_old_files(struct files_struct * files)
 {
         long j = -1;
         struct fdtable *fdt;
@@ -974,7 +964,7 @@ int prepare_binprm(struct linux_binprm *bprm)
 
 EXPORT_SYMBOL(prepare_binprm);
 
-static inline int unsafe_exec(struct task_struct *p)
+static int unsafe_exec(struct task_struct *p)
 {
         int unsafe = 0;
         if (p->ptrace & PT_PTRACED) {
@@ -1472,6 +1462,7 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
         if (!(current->signal->flags & SIGNAL_GROUP_EXIT)) {
                 current->signal->flags = SIGNAL_GROUP_EXIT;
                 current->signal->group_exit_code = exit_code;
+                current->signal->group_stop_count = 0;
                 retval = 0;
         }
         spin_unlock_irq(&current->sighand->siglock);
@@ -1487,7 +1478,6 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
          * Clear any false indication of pending signals that might
          * be seen by the filesystem code called to write the core file.
          */
-        current->signal->group_stop_count = 0;
         clear_thread_flag(TIF_SIGPENDING);
 
         if (current->signal->rlim[RLIMIT_CORE].rlim_cur < binfmt->min_coredump)
@@ -1515,7 +1505,7 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
                 goto close_fail;
         if (!file->f_op->write)
                 goto close_fail;
-        if (do_truncate(file->f_dentry, 0, file) != 0)
+        if (do_truncate(file->f_dentry, 0, 0, file) != 0)
                 goto close_fail;
 
         retval = binfmt->core_dump(signr, regs, file);