Linux-NFS Archive on lore.kernel.org
 help / color / Atom feed
From: Olga Kornievskaia <aglo@umich.edu>
To: Trond Myklebust <trondmy@gmail.com>
Cc: linux-nfs <linux-nfs@vger.kernel.org>
Subject: Re: [PATCH 04/19] pnfs: Add layout driver flag PNFS_LAYOUTGET_ON_OPEN
Date: Wed, 30 May 2018 16:10:23 -0400
Message-ID: <CAN-5tyGKCoRKLW2_KVP8_eMx0mqC7U2yEYNr=jj5_ybM+vaL6Q@mail.gmail.com> (raw)
In-Reply-To: <20180530180553.38769-5-trond.myklebust@hammerspace.com>

Hi Trond,

This feature is enabled for Flexfiles layout type. Is there a reason
that it shouldn't be generic for all pnfs?

On Wed, May 30, 2018 at 2:05 PM, Trond Myklebust <trondmy@gmail.com> wrote:
> From: Fred Isaman <fred.isaman@gmail.com>
>
> Driver can set flag to allow LAYOUTGET to be sent with OPEN.
>
> Signed-off-by: Fred Isaman <fred.isaman@gmail.com>
> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
> ---
>  fs/nfs/flexfilelayout/flexfilelayout.c | 1 +
>  fs/nfs/pnfs.h                          | 1 +
>  2 files changed, 2 insertions(+)
>
> diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
> index c75ad982bcfc..3ae038d9c292 100644
> --- a/fs/nfs/flexfilelayout/flexfilelayout.c
> +++ b/fs/nfs/flexfilelayout/flexfilelayout.c
> @@ -2347,6 +2347,7 @@ static struct pnfs_layoutdriver_type flexfilelayout_type = {
>         .id                     = LAYOUT_FLEX_FILES,
>         .name                   = "LAYOUT_FLEX_FILES",
>         .owner                  = THIS_MODULE,
> +       .flags                  = PNFS_LAYOUTGET_ON_OPEN,
>         .set_layoutdriver       = ff_layout_set_layoutdriver,
>         .alloc_layout_hdr       = ff_layout_alloc_layout_hdr,
>         .free_layout_hdr        = ff_layout_free_layout_hdr,
> diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
> index daf6cbf5c15f..f71a55f11b97 100644
> --- a/fs/nfs/pnfs.h
> +++ b/fs/nfs/pnfs.h
> @@ -110,6 +110,7 @@ enum layoutdriver_policy_flags {
>         PNFS_LAYOUTRET_ON_SETATTR       = 1 << 0,
>         PNFS_LAYOUTRET_ON_ERROR         = 1 << 1,
>         PNFS_READ_WHOLE_PAGE            = 1 << 2,
> +       PNFS_LAYOUTGET_ON_OPEN          = 1 << 3,
>  };
>
>  struct nfs4_deviceid_node;
> --
> 2.17.0
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

  parent reply index

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-30 18:05 [PATCH 00/19] Layoutget on OPEN Trond Myklebust
2018-05-30 18:05 ` [PATCH 01/19] pnfs: Remove redundant assignment from nfs4_proc_layoutget() Trond Myklebust
2018-05-30 18:05   ` [PATCH 02/19] pnfs: Store return value of decode_layoutget for later processing Trond Myklebust
2018-05-30 18:05     ` [PATCH 03/19] NFS4: move ctx into nfs4_run_open_task Trond Myklebust
2018-05-30 18:05       ` [PATCH 04/19] pnfs: Add layout driver flag PNFS_LAYOUTGET_ON_OPEN Trond Myklebust
2018-05-30 18:05         ` [PATCH 05/19] pnfs: refactor send_layoutget Trond Myklebust
2018-05-30 18:05           ` [PATCH 06/19] pnfs: move allocations out of nfs4_proc_layoutget Trond Myklebust
2018-05-30 18:05             ` [PATCH 07/19] pnfs: Add conditional encode/decode of LAYOUTGET within OPEN compound Trond Myklebust
2018-05-30 18:05               ` [PATCH 08/19] pnfs: Move nfs4_opendata into nfs4_fs.h Trond Myklebust
2018-05-30 18:05                 ` [PATCH 09/19] pnfs: Change pnfs_alloc_init_layoutget_args call signature Trond Myklebust
2018-05-30 18:05                   ` [PATCH 10/19] pnfs: Add LAYOUTGET to OPEN of a new file Trond Myklebust
2018-05-30 18:05                     ` [PATCH 11/19] pnfs: Add LAYOUTGET to OPEN of an existing file Trond Myklebust
2018-05-30 18:05                       ` [PATCH 12/19] pnfs: Stop attempting LAYOUTGET on OPEN on failure Trond Myklebust
2018-05-30 18:05                         ` [PATCH 13/19] pnfs: Add barrier to prevent lgopen using LAYOUTGET during recall Trond Myklebust
2018-05-30 18:05                           ` [PATCH 14/19] pnfs: Fix manipulation of NFS_LAYOUT_FIRST_LAYOUTGET Trond Myklebust
2018-05-30 18:05                             ` [PATCH 15/19] NFSv4/pnfs: Ensure pnfs_parse_lgopen() won't try to parse uninitialised data Trond Myklebust
2018-05-30 18:05                               ` [PATCH 16/19] NFSv4/pnfs: Don't switch off layoutget-on-open for transient errors Trond Myklebust
2018-05-30 18:05                                 ` [PATCH 17/19] pNFS: Don't send LAYOUTGET on OPEN for read, if we already have cached data Trond Myklebust
2018-05-30 18:05                                   ` [PATCH 18/19] pnfs: Don't call commit on failed layoutget-on-open Trond Myklebust
2018-05-30 18:05                                     ` [PATCH 19/19] pnfs: Don't release the sequence slot until we've processed layoutget on open Trond Myklebust
2018-05-30 20:10         ` Olga Kornievskaia [this message]
2018-05-31 12:40           ` [PATCH 04/19] pnfs: Add layout driver flag PNFS_LAYOUTGET_ON_OPEN Trond Myklebust
2019-09-06 20:17             ` Olga Kornievskaia
2018-05-30 18:25 ` [PATCH 00/19] Layoutget on OPEN Olga Kornievskaia
2018-05-30 18:36   ` Trond Myklebust
2018-05-30 18:37     ` Olga Kornievskaia
2018-05-30 19:27       ` Olga Kornievskaia
2018-05-30 19:29         ` Olga Kornievskaia
2018-05-30 19:47           ` Olga Kornievskaia
2018-05-30 22:33             ` Trond Myklebust
2018-05-31 18:59 ` bfields
2018-06-01  0:28   ` Trond Myklebust

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAN-5tyGKCoRKLW2_KVP8_eMx0mqC7U2yEYNr=jj5_ybM+vaL6Q@mail.gmail.com' \
    --to=aglo@umich.edu \
    --cc=linux-nfs@vger.kernel.org \
    --cc=trondmy@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-NFS Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-nfs/0 linux-nfs/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-nfs linux-nfs/ https://lore.kernel.org/linux-nfs \
		linux-nfs@vger.kernel.org linux-nfs@archiver.kernel.org
	public-inbox-index linux-nfs

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-nfs


AGPL code for this site: git clone https://public-inbox.org/ public-inbox