mm/memory.c: add vm_insert_pages()

Add the ability to insert multiple pages at once to a user VM with lower
PTE spinlock operations.

The intention of this patch-set is to reduce atomic ops for tcp zerocopy
receives, which normally hits the same spinlock multiple times
consecutively.

[[email protected]: pte_alloc() no longer takes the `addr' argument]
[[email protected]: add missing page_count() check to vm_insert_pages()]
  Link: http://lkml.kernel.org/r/[email protected]
[[email protected]: vm_insert_pages() checks if pte_index defined]
  Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arjun Roy <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: Soheil Hassas Yeganeh <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Cc: David Miller <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Stephen Rothwell <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions