| commit | 91612e0df20a52f61db3cac280c153311b36df7a | |
| author | Hugh Dickins <hugh@veritas.com> | |
| Wed, 22 Jun 2005 00:15:07 +0000 (21 17:15 -0700) | ||
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | |
| Wed, 22 Jun 2005 01:46:19 +0000 (21 18:46 -0700) | ||
| tree | 44a19e1d03147aabb842cbaac493a7213b836e4a | treesnapshot (tar.gz zip) |
| parent | 941150a326be88af245034ef4b3e9fa00229aa2d | commitdiff |
[PATCH] mbind: check_range use standard ptwalk
Strict mbind's check for currently mapped pages being on node has been
using a slow loop which re-evaluates pgd, pud, pmd, pte for each entry:
replace that by a standard four-level page table walk like others in mm.
Since mmap_sem is held for writing, page_table_lock can be taken at the
inner level to limit latency.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Strict mbind's check for currently mapped pages being on node has been
using a slow loop which re-evaluates pgd, pud, pmd, pte for each entry:
replace that by a standard four-level page table walk like others in mm.
Since mmap_sem is held for writing, page_table_lock can be taken at the
inner level to limit latency.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| mm/mempolicy.c | diffblobblamehistory |