diff options
Diffstat (limited to 'mm/util.c')
| -rw-r--r-- | mm/util.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/mm/util.c b/mm/util.c index 8a1b3a1fb595..03b237746850 100644 --- a/mm/util.c +++ b/mm/util.c @@ -289,7 +289,7 @@ EXPORT_SYMBOL_GPL(get_user_pages_fast); unsigned long vm_mmap_pgoff(struct file *file, unsigned long addr, unsigned long len, unsigned long prot, - unsigned long flag, unsigned long pgoff) + unsigned long flag, unsigned long pgoff, bool killable) { unsigned long ret; struct mm_struct *mm = current->mm; @@ -297,7 +297,12 @@ unsigned long vm_mmap_pgoff(struct file *file, unsigned long addr, ret = security_mmap_file(file, prot, flag); if (!ret) { - down_write(&mm->mmap_sem); + if (killable) { + if (down_write_killable(&mm->mmap_sem)) + return -EINTR; + } else { + down_write(&mm->mmap_sem); + } ret = do_mmap_pgoff(file, addr, len, prot, flag, pgoff, &populate); up_write(&mm->mmap_sem); @@ -307,6 +312,7 @@ unsigned long vm_mmap_pgoff(struct file *file, unsigned long addr, return ret; } +/* XXX are all callers checking an error */ unsigned long vm_mmap(struct file *file, unsigned long addr, unsigned long len, unsigned long prot, unsigned long flag, unsigned long offset) @@ -316,7 +322,7 @@ unsigned long vm_mmap(struct file *file, unsigned long addr, if (unlikely(offset_in_page(offset))) return -EINVAL; - return vm_mmap_pgoff(file, addr, len, prot, flag, offset >> PAGE_SHIFT); + return vm_mmap_pgoff(file, addr, len, prot, flag, offset >> PAGE_SHIFT, false); } EXPORT_SYMBOL(vm_mmap); |