tjh.dev / kernel
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[PATCH] x86_64: Fix incorrect node_present_pages on NUMA

Currently, we do not pass the correct start_pfn to e820_hole_size, to
calculate holes. Following patch fixes that.

The bug results in incorrect number of node_present_pages for each pgdat
and causes ugly output in /sys and probably VM inbalances.

Signed-off-by: Alok N Kataria <alokk@calsoftinc.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Sighed-off-by: Shair Fultheim <shai@scalex86.org>
Sighed-off-by: Linus Torvalds <torvalds@osdl.org>

authored by

Ravikiran G Thirumalai and committed by
Linus Torvalds 576fc097 f873e3e8

+1 -1
+1 -1
arch/x86_64/mm/init.c
··· 348 348 } 349 349 350 350 /* Compute holes */ 351 - w = 0; 351 + w = start_pfn; 352 352 for (i = 0; i < MAX_NR_ZONES; i++) { 353 353 unsigned long s = w; 354 354 w += z[i];