diff options
| author | Paul Mackerras <paulus@samba.org> | 2008-12-16 14:38:58 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-12-16 14:38:58 +1100 |
| commit | 1e1c568d6c66d1e2e345fd15e2a1ceafc5d7e33a (patch) | |
| tree | 0cf88547108a750d6eb910564ef5bf0ffb5ceef3 /kernel/fork.c | |
| parent | 91cac623262c1c0cd298c5c648a8bd2b647c264d (diff) | |
| parent | 23e0e8afafd9ac065d81506524adf3339584044b (diff) | |
Merge branch 'merge' into next
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 2a372a0e206f..495da2e9a8b4 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -315,17 +315,20 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm) file = tmp->vm_file; if (file) { struct inode *inode = file->f_path.dentry->d_inode; + struct address_space *mapping = file->f_mapping; + get_file(file); if (tmp->vm_flags & VM_DENYWRITE) atomic_dec(&inode->i_writecount); - - /* insert tmp into the share list, just after mpnt */ - spin_lock(&file->f_mapping->i_mmap_lock); + spin_lock(&mapping->i_mmap_lock); + if (tmp->vm_flags & VM_SHARED) + mapping->i_mmap_writable++; tmp->vm_truncate_count = mpnt->vm_truncate_count; - flush_dcache_mmap_lock(file->f_mapping); + flush_dcache_mmap_lock(mapping); + /* insert tmp into the share list, just after mpnt */ vma_prio_tree_add(tmp, mpnt); - flush_dcache_mmap_unlock(file->f_mapping); - spin_unlock(&file->f_mapping->i_mmap_lock); + flush_dcache_mmap_unlock(mapping); + spin_unlock(&mapping->i_mmap_lock); } /* @@ -1398,6 +1401,7 @@ long do_fork(unsigned long clone_flags, init_completion(&vfork); } + audit_finish_fork(p); tracehook_report_clone(trace, regs, clone_flags, nr, p); /* |