Commit 8a459e44 authored Feb 04, 2008 by Oleg Nesterov Committed by Linus Torvalds Feb 05, 2008

sys_remap_file_pages: fix ->vm_file accounting



Fix ->vm_file accounting, mmap_region() may do do_munmap().

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent c0b49b0d

mm/fremap.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -190,10 +190,13 @@ asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
		*/
		if (mapping_cap_account_dirty(mapping)) {
		unsigned long addr;
		struct file *file = vma->vm_file;

		flags &= MAP_NONBLOCK;
		addr = mmap_region(vma->vm_file, start, size,
		get_file(file);
		addr = mmap_region(file, start, size,
		flags, vma->vm_flags, pgoff, 1);
		fput(file);
		if (IS_ERR_VALUE(addr)) {
		err = addr;
		} else {