From: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx> Subject: hugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB) Currently we fail to include any data on hugepages into coredump, because VM_DONTDUMP is set on hugetlbfs's vma. This behavior was recently introduced by commit 314e51b98 "mm: kill vma flag VM_RESERVED and mm->reserved_vm counter". This looks to me a serious regression, so let's fix it. Signed-off-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx> Acked-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx> Acked-by: Michal Hocko <mhocko@xxxxxxx> Reviewed-by: Rik van Riel <riel@xxxxxxxxxx> Acked-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> Acked-by: David Rientjes <rientjes@xxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> [3.7+] Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/hugetlbfs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN fs/hugetlbfs/inode.c~hugetlbfs-stop-setting-vm_dontdump-in-initializing-vmavm_hugetlb fs/hugetlbfs/inode.c --- a/fs/hugetlbfs/inode.c~hugetlbfs-stop-setting-vm_dontdump-in-initializing-vmavm_hugetlb +++ a/fs/hugetlbfs/inode.c @@ -110,7 +110,7 @@ static int hugetlbfs_file_mmap(struct fi * way when do_mmap_pgoff unwinds (may be important on powerpc * and ia64). */ - vma->vm_flags |= VM_HUGETLB | VM_DONTEXPAND | VM_DONTDUMP; + vma->vm_flags |= VM_HUGETLB | VM_DONTEXPAND; vma->vm_ops = &hugetlb_vm_ops; if (vma->vm_pgoff & (~huge_page_mask(h) >> PAGE_SHIFT)) _ -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html