• Michel Lespinasse's avatar
    mm: add FOLL_MLOCK follow_page flag. · 110d74a9
    Michel Lespinasse authored
    Move the code to mlock pages from __mlock_vma_pages_range() to
    follow_page().
    
    This allows __mlock_vma_pages_range() to not have to break down work into
    16-page batches.
    
    An additional motivation for doing this within the present patch series is
    that it'll make it easier for a later chagne to drop mmap_sem when
    blocking on disk (we'd like to be able to resume at the page that was read
    from disk instead of at the start of a 16-page batch).
    Signed-off-by: default avatarMichel Lespinasse <walken@google.com>
    Cc: Hugh Dickins <hughd@google.com>
    Cc: Rik van Riel <riel@redhat.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Nick Piggin <npiggin@kernel.dk>
    Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: "H. Peter Anvin" <hpa@zytor.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: David Howells <dhowells@redhat.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    110d74a9
memory.c 98.5 KB