From: Jeff Layton <jlayton@redhat.com>
To: "J. Bruce Fields" <bfields@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
linux-nfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Dave Chinner <david@fromorbit.com>
Subject: Re: [PATCH 14/16] nfsd4: delay setting current_fh in open
Date: Fri, 26 Jul 2013 07:11:53 -0400 [thread overview]
Message-ID: <20130726071153.1fd5a416@corrin.poochiereds.net> (raw)
In-Reply-To: <1374094217-31493-16-git-send-email-bfields@redhat.com>
On Wed, 17 Jul 2013 16:50:15 -0400
"J. Bruce Fields" <bfields@redhat.com> wrote:
> From: "J. Bruce Fields" <bfields@redhat.com>
>
> This is basically a no-op, to simplify a following patch.
>
> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
> ---
> fs/nfsd/nfs4proc.c | 36 ++++++++++++++++++++----------------
> 1 file changed, 20 insertions(+), 16 deletions(-)
>
> diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
> index a7cee86..4c0cbeb 100644
> --- a/fs/nfsd/nfs4proc.c
> +++ b/fs/nfsd/nfs4proc.c
> @@ -230,17 +230,17 @@ static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate
> }
>
> static __be32
> -do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
> +do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state
> +*cstate, struct nfsd4_open *open, struct svc_fh **resfh)
^^^
nit: weird indentation here
> {
> struct svc_fh *current_fh = &cstate->current_fh;
> - struct svc_fh *resfh;
> int accmode;
> __be32 status;
>
> - resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
> - if (!resfh)
> + *resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
> + if (!*resfh)
> return nfserr_jukebox;
> - fh_init(resfh, NFS4_FHSIZE);
> + fh_init(*resfh, NFS4_FHSIZE);
> open->op_truncate = 0;
>
> if (open->op_create) {
> @@ -265,7 +265,7 @@ do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, stru
> */
> status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
> open->op_fname.len, &open->op_iattr,
> - resfh, open->op_createmode,
> + *resfh, open->op_createmode,
> (u32 *)open->op_verf.data,
> &open->op_truncate, &open->op_created);
>
> @@ -282,29 +282,26 @@ do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, stru
> FATTR4_WORD1_TIME_MODIFY);
> } else {
> status = nfsd_lookup(rqstp, current_fh,
> - open->op_fname.data, open->op_fname.len, resfh);
> + open->op_fname.data, open->op_fname.len, *resfh);
> fh_unlock(current_fh);
> }
> if (status)
> goto out;
> - status = nfsd_check_obj_isreg(resfh);
> + status = nfsd_check_obj_isreg(*resfh);
> if (status)
> goto out;
>
> if (is_create_with_attrs(open) && open->op_acl != NULL)
> - do_set_nfs4_acl(rqstp, resfh, open->op_acl, open->op_bmval);
> + do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval);
>
> - nfsd4_set_open_owner_reply_cache(cstate, open, resfh);
> + nfsd4_set_open_owner_reply_cache(cstate, open, *resfh);
> accmode = NFSD_MAY_NOP;
> if (open->op_created ||
> open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
> accmode |= NFSD_MAY_OWNER_OVERRIDE;
> - status = do_open_permission(rqstp, resfh, open, accmode);
> + status = do_open_permission(rqstp, *resfh, open, accmode);
> set_change_info(&open->op_cinfo, current_fh);
> - fh_dup2(current_fh, resfh);
> out:
> - fh_put(resfh);
> - kfree(resfh);
> return status;
> }
>
> @@ -357,6 +354,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
> struct nfsd4_open *open)
> {
> __be32 status;
> + struct svc_fh *resfh = NULL;
> struct nfsd4_compoundres *resp;
> struct net *net = SVC_NET(rqstp);
> struct nfsd_net *nn = net_generic(net, nfsd_net_id);
> @@ -423,7 +421,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
> switch (open->op_claim_type) {
> case NFS4_OPEN_CLAIM_DELEGATE_CUR:
> case NFS4_OPEN_CLAIM_NULL:
> - status = do_open_lookup(rqstp, cstate, open);
> + status = do_open_lookup(rqstp, cstate, open, &resfh);
> if (status)
> goto out;
> break;
> @@ -439,6 +437,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
> status = do_open_fhandle(rqstp, cstate, open);
> if (status)
> goto out;
> + resfh = &cstate->current_fh;
> break;
> case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
> case NFS4_OPEN_CLAIM_DELEGATE_PREV:
> @@ -458,9 +457,14 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
> * successful, it (1) truncates the file if open->op_truncate was
> * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
> */
> - status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
> + status = nfsd4_process_open2(rqstp, resfh, open);
> WARN_ON(status && open->op_created);
> out:
> + if (resfh && resfh != &cstate->current_fh) {
> + fh_dup2(&cstate->current_fh, resfh);
> + fh_put(resfh);
> + kfree(resfh);
> + }
> nfsd4_cleanup_open_state(open, status);
> if (open->op_openowner && !nfsd4_has_session(cstate))
> cstate->replay_owner = &open->op_openowner->oo_owner;
Acked-by: Jeff Layton <jlayton@redhat.com>
next prev parent reply other threads:[~2013-07-26 11:11 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-17 20:50 [PATCH 00/16] Implement NFSv4 delegations, take 9 J. Bruce Fields
2013-07-17 20:50 ` [PATCH] nfsd4: fix minorversion support interface J. Bruce Fields
2013-07-17 21:08 ` J. Bruce Fields
2013-07-17 20:50 ` [PATCH 01/16] vfs: pull ext4's double-i_mutex-locking into common code J. Bruce Fields
2013-07-17 20:50 ` [PATCH 02/16] vfs: don't use PARENT/CHILD lock classes for non-directories J. Bruce Fields
2013-07-17 20:50 ` [PATCH 03/16] vfs: rename I_MUTEX_QUOTA now that it's not used for quotas J. Bruce Fields
2013-07-17 20:50 ` [PATCH 04/16] vfs: take i_mutex on renamed file J. Bruce Fields
2013-07-17 20:50 ` [PATCH 05/16] locks: introduce new FL_DELEG lock flag J. Bruce Fields
2013-07-17 20:50 ` [PATCH 06/16] locks: implement delegations J. Bruce Fields
2013-07-17 20:50 ` [PATCH 07/16] namei: minor vfs_unlink cleanup J. Bruce Fields
2013-07-17 20:50 ` [PATCH 08/16] locks: break delegations on unlink J. Bruce Fields
2013-07-17 20:50 ` [PATCH 09/16] locks: helper functions for delegation breaking J. Bruce Fields
2013-07-26 10:50 ` Jeff Layton
2013-07-17 20:50 ` [PATCH 10/16] locks: break delegations on rename J. Bruce Fields
2013-07-17 20:50 ` [PATCH 11/16] locks: break delegations on link J. Bruce Fields
2013-07-17 20:50 ` [PATCH 12/16] locks: break delegations on any attribute modification J. Bruce Fields
2013-07-26 10:50 ` Jeff Layton
2013-07-17 20:50 ` [PATCH 13/16] nfsd4: minor nfs4_setlease cleanup J. Bruce Fields
2013-07-26 10:53 ` Jeff Layton
2013-07-17 20:50 ` [PATCH 14/16] nfsd4: delay setting current_fh in open J. Bruce Fields
2013-07-26 11:11 ` Jeff Layton [this message]
2013-07-26 16:04 ` J. Bruce Fields
2013-07-17 20:50 ` [PATCH 15/16] nfsd4: close open-deleg/unlink/rename race J. Bruce Fields
2013-07-26 11:23 ` Jeff Layton
2013-07-26 16:04 ` J. Bruce Fields
2013-07-26 21:14 ` J. Bruce Fields
2013-07-17 20:50 ` [PATCH 16/16] nfsd4: break only delegations when appropriate J. Bruce Fields
2013-07-26 11:24 ` Jeff Layton
2013-07-17 21:09 ` [PATCH 00/16] Implement NFSv4 delegations, take 9 J. Bruce Fields
Reply instructions:
You may reply publicly 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=20130726071153.1fd5a416@corrin.poochiereds.net \
--to=jlayton@redhat.com \
--cc=bfields@redhat.com \
--cc=david@fromorbit.com \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-nfs@vger.kernel.org \
--cc=viro@zeniv.linux.org.uk \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).