Re: [HPDD-discuss] [PATCH 10/26] lustre: Convert ll_get_user_pages() to use get_user_pages_fast()

CC: Greg Kroah-Hartman <greg(a)kroah.com&gt; CC: Peng Tao <tao.peng(a)emc.com&gt; CC: Andreas Dilger <andreas.dilger(a)intel.com&gt; CC: hpdd-discuss(a)lists.01.org Signed-off-by: Jan Kara <jack(a)suse.cz&gt;

--- drivers/staging/lustre/lustre/llite/rw26.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c index 96c29ad2fc8c..7e3e0967993b 100644 --- a/drivers/staging/lustre/lustre/llite/rw26.c +++ b/drivers/staging/lustre/lustre/llite/rw26.c @@ -202,11 +202,8 @@ static inline int ll_get_user_pages(int rw, unsigned long user_addr, OBD_ALLOC_LARGE(*pages, *max_pages * sizeof(**pages)); if (*pages) { - down_read(&current->mm->mmap_sem); - result = get_user_pages(current, current->mm, user_addr, - *max_pages, (rw == READ), 0, *pages, - NULL); - up_read(&current->mm->mmap_sem); + result = get_user_pages_fast(user_addr, *max_pages, + (rw == READ), *pages); if (unlikely(result <= 0)) OBD_FREE_LARGE(*pages, *max_pages * sizeof(**pages)); }