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(parent: 13b9d47) | patch
[ARM] Tighten pfn_valid() test.
authorRussell King <rmk@dyn-67.arm.linux.org.uk>
Thu, 15 Sep 2005 14:17:59 +0000 (15:17 +0100)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Thu, 15 Sep 2005 14:17:59 +0000 (15:17 +0100)
commit1b3cb73f7306f97a68fa973dec9f3c3b68bd29cf
treeb88e67dcdce66832980245bcc450233599f857d0tree | snapshot (tar.gz zip)
parent13b9d47ed36e8019a99c798b84c341ef75868e02commit | diff
[ARM] Tighten pfn_valid() test.

Thomas Gleixner reported that mmaping and unmapping each physical
page in turn eventually caused the kernel to oops.  It appears
that pfn_valid() in the discontigmem case was too simplistic for
proper operation.

Tighten the logic so we also check if the PFN is within the range
of the selected memory node.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
include/asm-arm/memory.h diff | blob | blame | history