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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-12 12:00:02 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-12 12:00:14 +0100 |
| commit | 92bf73e90a35d40ebc1446488218f03833b36f86 (patch) | |
| tree | 8aaae58fcb7f3e06e63a5214f910acf47f4cc9d6 /kernel/fork.c | |
| parent | 447557ac7ce120306b4a31d6003faef39cb1bf14 (diff) | |
| parent | 915b0d0104b72fd36af088ba4b11b5690bc96a6c (diff) | |
Merge branch 'x86/irq' into perfcounters/core
( with manual semantic merge of arch/x86/kernel/cpu/perf_counter.c )
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 441fadff1fa..e2078608ef5 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); } /* @@ -1399,6 +1402,7 @@ long do_fork(unsigned long clone_flags, init_completion(&vfork); } + audit_finish_fork(p); tracehook_report_clone(trace, regs, clone_flags, nr, p); /* |