From: Hugh Dickins Date: Sun, 30 Oct 2005 01:16:24 +0000 (-0700) Subject: [PATCH] mm: arches skip ptlock X-Git-Tag: v2.6.15-rc1~730^2^2~42 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b462705ac679f6195d1b23a752cda592d9107495;p=pandora-kernel.git [PATCH] mm: arches skip ptlock Convert those few architectures which are calling pud_alloc, pmd_alloc, pte_alloc_map on a user mm, not to take the page_table_lock first, nor drop it after. Each of these can continue to use pte_alloc_map, no need to change over to pte_alloc_map_lock, they're neither racy nor swappable. In the sparc64 io_remap_pfn_range, flush_tlb_range then falls outside of the page_table_lock: that's okay, on sparc64 it's like flush_tlb_mm, and that has always been called from outside of page_table_lock in dup_mmap. Signed-off-by: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Reading git-diff-tree failed