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authorHugh Dickins <hugh@veritas.com>2005-10-29 18:16:34 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-29 21:40:41 -0700
commit60ec5585496871345c1a8113d7b60ed9d9474866 (patch)
tree172df570995ec777ca2a271dda7e3fcbb2dc5acb /kernel/user.c
parentdeceb6cd17e6dfafe4c4f81b1b4153bc41b2cb70 (diff)
[PATCH] mm: i386 sh sh64 ready for split ptlock
Use pte_offset_map_lock, instead of pte_offset_map (or inappropriate pte_offset_kernel) and mm-wide page_table_lock, in sundry arch places. The i386 vm86 mark_screen_rdonly: yes, there was and is an assumption that the screen fits inside the one page table, as indeed it does. The sh __do_page_fault: which handles both kernel faults (without lock) and user mm faults (locked - though it set_pte without locking before). The sh64 flush_cache_range and helpers: which wrongly thought callers held page_table_lock before (only its tlb_start_vma did, and no longer does so); moved the flush loop down, and adjusted the large versus small range decision to consider a range which spans page tables as large. Signed-off-by: Hugh Dickins <hugh@veritas.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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