mm/memory.c: properly pte_offset_map_lock/unlock in vm_insert_pages()

Calls to pte_offset_map() in vm_insert_pages() are erroneously not
matched with a call to pte_unmap().  This would cause problems on
architectures where that is not a no-op.

This patch does away with the non-traditional locking in the existing
code, and instead uses pte_offset_map_lock/unlock() as usual,
incrementing PTE as necessary.  The PTE pointer is kept within bounds
since we clamp it with PTRS_PER_PTE.

Link: http://lkml.kernel.org/r/[email protected]
Fixes: 8cd3984d81d5 ("mm/memory.c: add vm_insert_pages()")
Signed-off-by: Arjun Roy <[email protected]>
Acked-by: David Rientjes <[email protected]>
Cc: Eric Dumazet <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Soheil Hassas Yeganeh <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions