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From: "Dilger, Andreas" <andreas.dilger@intel.com>
To: Jan Kara <jack@suse.cz>, LKML <linux-kernel@vger.kernel.org>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
	Greg Kroah-Hartman <greg@kroah.com>, Peng Tao <tao.peng@emc.com>,
	"hpdd-discuss@lists.01.org" <hpdd-discuss@ml01.01.org>
Subject: Re: [PATCH 10/26] lustre: Convert ll_get_user_pages() to use get_user_pages_fast()
Date: Sat, 5 Oct 2013 06:27:43 +0000	[thread overview]
Message-ID: <CE750CA8.75301%andreas.dilger@intel.com> (raw)
In-Reply-To: <1380724087-13927-11-git-send-email-jack@suse.cz>

On 2013/10/02 8:27 AM, "Jan Kara" <jack@suse.cz> wrote:
>CC: Greg Kroah-Hartman <greg@kroah.com>
>CC: Peng Tao <tao.peng@emc.com>
>CC: Andreas Dilger <andreas.dilger@intel.com>
>CC: hpdd-discuss@lists.01.org
>Signed-off-by: Jan Kara <jack@suse.cz>

Acked-by: Andreas Dilger <andreas.dilger@intel.com>

>---
> 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));
> 	}


Cheers, Andreas
-- 
Andreas Dilger

Lustre Software Architect
Intel High Performance Data Division



  reply	other threads:[~2013-10-05  6:27 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1380724087-13927-1-git-send-email-jack@suse.cz>
2013-10-02 14:27 ` [PATCH 01/26] cris: Convert cryptocop to use get_user_pages_fast() Jan Kara
2013-10-02 14:27 ` [PATCH 02/26] ia64: Use get_user_pages_fast() in err_inject.c Jan Kara
2013-10-02 14:27 ` [PATCH 03/26] dma: Use get_user_pages_fast() in dma_pin_iovec_pages() Jan Kara
2013-10-02 14:27 ` [PATCH 04/26] drm: Convert via driver to use get_user_pages_fast() Jan Kara
2013-10-02 14:27 ` [PATCH 05/26] omap3isp: Make isp_video_buffer_prepare_user() " Jan Kara
2013-10-02 19:41   ` Laurent Pinchart
2013-10-02 20:18     ` Jan Kara
2013-10-02 14:27 ` [PATCH 06/26] vmw_vmci: Convert driver to " Jan Kara
2013-10-02 14:27 ` [PATCH 07/26] st: Convert sgl_map_user_pages() " Jan Kara
2013-10-02 14:27 ` [PATCH 08/26] ced1401: Convert driver " Jan Kara
2013-10-02 14:27 ` [PATCH 09/26] crystalhd: Convert crystalhd_map_dio() " Jan Kara
2013-10-02 14:27 ` [PATCH 10/26] lustre: Convert ll_get_user_pages() " Jan Kara
2013-10-05  6:27   ` Dilger, Andreas [this message]
2013-10-02 14:27 ` [PATCH 11/26] sep: Convert sep_lock_user_pages() to get_user_pages_fast() Jan Kara
2013-10-02 14:27 ` [PATCH 12/26] pvr2fb: Convert pvr2fb_write() to use get_user_pages_fast() Jan Kara
2013-10-02 14:27 ` [PATCH 13/26] fsl_hypervisor: Convert ioctl_memcpy() " Jan Kara
2013-10-04  2:38   ` Timur Tabi
2013-10-02 14:27 ` [PATCH 14/26] nfs: Convert direct IO " Jan Kara
2013-10-02 14:27 ` [PATCH 15/26] ceph: Convert ceph_get_direct_page_vector() to get_user_pages_fast() Jan Kara
2013-10-02 14:27 ` [PATCH 16/26] mm: Provide get_user_pages_unlocked() Jan Kara
2013-10-02 16:25   ` Christoph Hellwig
2013-10-02 16:28   ` KOSAKI Motohiro
2013-10-02 19:39     ` Jan Kara
2013-10-02 14:27 ` [PATCH 17/26] kvm: Use get_user_pages_unlocked() in async_pf_execute() Jan Kara
2013-10-02 14:59   ` Gleb Natapov
2013-10-02 14:27 ` [PATCH 18/26] mm: Convert process_vm_rw_pages() to use get_user_pages_unlocked() Jan Kara
2013-10-02 16:32   ` KOSAKI Motohiro
2013-10-02 19:36     ` Jan Kara
2013-10-03 22:40       ` KOSAKI Motohiro
2013-10-07 20:55         ` Jan Kara
2013-10-08  0:10           ` KOSAKI Motohiro
2013-10-02 14:28 ` [PATCH 19/26] ivtv: Convert driver " Jan Kara
2013-10-05 12:02   ` Andy Walls
2013-10-07 17:22     ` Jan Kara
2013-10-02 14:28 ` [PATCH 20/26] ib: Convert ib_umem_get() to get_user_pages_unlocked() Jan Kara
2013-10-02 14:28 ` [PATCH 21/26] ib: Convert ipath_get_user_pages() " Jan Kara
2013-10-02 14:28 ` [PATCH 22/26] ib: Convert ipath_user_sdma_pin_pages() to use get_user_pages_unlocked() Jan Kara
2013-10-02 14:28 ` [PATCH 23/26] ib: Convert qib_get_user_pages() to get_user_pages_unlocked() Jan Kara
2013-10-02 14:54   ` Marciniszyn, Mike
2013-10-02 15:28     ` Jan Kara
2013-10-02 15:32       ` Marciniszyn, Mike
2013-10-02 15:38         ` Jan Kara
2013-10-04 13:39           ` Marciniszyn, Mike
2013-10-04 13:46             ` Marciniszyn, Mike
2013-10-04 13:44         ` Marciniszyn, Mike
2013-10-04 13:52   ` Marciniszyn, Mike
2013-10-04 18:33     ` Jan Kara
2013-10-07 15:20       ` Marciniszyn, Mike
2013-10-07 15:38       ` Marciniszyn, Mike
2013-10-07 17:26         ` Jan Kara
2013-10-08 19:06           ` Jan Kara
2013-10-16 21:39             ` Jan Kara
2013-10-02 14:28 ` [PATCH 24/26] ib: Convert qib_user_sdma_pin_pages() to use get_user_pages_unlocked() Jan Kara
2013-10-02 14:28 ` [PATCH 25/26] ib: Convert mthca_map_user_db() to use get_user_pages_fast() Jan Kara
2013-10-02 14:28 ` [PATCH 26/26] aio: Remove useless get_user_pages() call Jan Kara

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