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Commit 3fa30460 authored by David Howells's avatar David Howells Committed by Linus Torvalds
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nommu: fix an incorrect comment in the do_mmap_shared_file() 



Fix an incorrect comment in the do_mmap_shared_file().  If a mapping is
requested MAP_SHARED, then a private copy cannot be made and still provide
correct semantics.

Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Reported-by: default avatarDave Hudson <uclinux@blueteddy.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 28b8e8d4

mm/nommu.c

+3 −4
Original line number Original line Diff line number Diff line
@@ -1040,10 +1040,9 @@ static int do_mmap_shared_file(struct vm_area_struct *vma) 
	if (ret != -ENOSYS)

	if (ret != -ENOSYS)

		return ret;

		return ret;





	/* getting an ENOSYS error indicates that direct mmap isn't

	/* getting -ENOSYS indicates that direct mmap isn't possible (as

	 * possible (as opposed to tried but failed) so we'll fall

	 * opposed to tried but failed) so we can only give a suitable error as

	 * through to making a private copy of the data and mapping

	 * it's not possible to make a private copy if MAP_SHARED was given */

	 * that if we can */

	return -ENODEV;

	return -ENODEV;

}

}