• Kirill A. Shutemov's avatar
    mm: convert mm->nr_ptes to atomic_long_t · e1f56c89
    Kirill A. Shutemov authored
    With split page table lock for PMD level we can't hold mm->page_table_lock
    while updating nr_ptes.
    
    Let's convert it to atomic_long_t to avoid races.
    Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
    Tested-by: default avatarAlex Thorlton <athorlton@sgi.com>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
    Cc: "Eric W . Biederman" <ebiederm@xmission.com>
    Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com>
    Cc: Al Viro <viro@zeniv.linux.org.uk>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Andrea Arcangeli <aarcange@redhat.com>
    Cc: Dave Hansen <dave.hansen@intel.com>
    Cc: Dave Jones <davej@redhat.com>
    Cc: David Howells <dhowells@redhat.com>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    Cc: Johannes Weiner <hannes@cmpxchg.org>
    Cc: Kees Cook <keescook@chromium.org>
    Cc: Mel Gorman <mgorman@suse.de>
    Cc: Michael Kerrisk <mtk.manpages@gmail.com>
    Cc: Oleg Nesterov <oleg@redhat.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Rik van Riel <riel@redhat.com>
    Cc: Robin Holt <robinmholt@gmail.com>
    Cc: Sedat Dilek <sedat.dilek@gmail.com>
    Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Hugh Dickins <hughd@google.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    e1f56c89
fork.c 45.6 KB