From: Andreas Gruenbacher <agruenba@redhat.com>
To: Alexander Viro <viro@zeniv.linux.org.uk>,
"Theodore Ts'o" <tytso@mit.edu>,
Andreas Dilger <adilger.kernel@dilger.ca>,
"J. Bruce Fields" <bfields@fieldses.org>,
Jeff Layton <jlayton@poochiereds.net>,
Trond Myklebust <trond.myklebust@primarydata.com>,
Anna Schumaker <anna.schumaker@netapp.com>,
Dave Chinner <david@fromorbit.com>,
linux-ext4@vger.kernel.org, xfs@oss.sgi.com,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org,
linux-api@vger.kernel.org
Cc: Andreas Gruenbacher <agruenba@redhat.com>
Subject: [PATCH v13 45/51] sunrpc: Allow to demand-allocate pages to encode into
Date: Tue, 3 Nov 2015 16:17:21 +0100 [thread overview]
Message-ID: <1446563847-14005-46-git-send-email-agruenba@redhat.com> (raw)
In-Reply-To: <1446563847-14005-1-git-send-email-agruenba@redhat.com>
When encoding large, variable-length objects such as acls into xdr_bufs,
it is easier to allocate buffer pages on demand rather than precomputing
the required buffer size.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
---
net/sunrpc/xdr.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index 4439ac4..63c1c36 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -537,6 +537,15 @@ static __be32 *xdr_get_next_encode_buffer(struct xdr_stream *xdr,
*/
xdr->scratch.iov_base = xdr->p;
xdr->scratch.iov_len = frag1bytes;
+
+ if (!*xdr->page_ptr) {
+ struct page *page = alloc_page(GFP_NOFS);
+
+ if (!page)
+ return NULL;
+ *xdr->page_ptr = page;
+ }
+
p = page_address(*xdr->page_ptr);
/*
* Note this is where the next encode will start after we've
--
2.5.0
next prev parent reply other threads:[~2015-11-03 15:22 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-03 15:16 [PATCH v13 00/51] Richacls Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 01/51] vfs: Add IS_ACL() and IS_RICHACL() tests Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 02/51] vfs: Add MAY_CREATE_FILE and MAY_CREATE_DIR permission flags Andreas Gruenbacher
2015-11-04 2:33 ` Andreas Dilger
2015-11-04 3:02 ` Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 03/51] vfs: Add MAY_DELETE_SELF and MAY_DELETE_CHILD " Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 04/51] vfs: Make the inode passed to inode_change_ok non-const Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 05/51] vfs: Add permission flags for setting file attributes Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 06/51] richacl: In-memory representation and helper functions Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 07/51] richacl: Permission mapping functions Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 08/51] richacl: Compute maximum file masks from an acl Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 09/51] richacl: Permission check algorithm Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 10/51] vfs: Cache base_acl objects in inodes Andreas Gruenbacher
2015-11-03 22:29 ` Andreas Dilger
2015-11-04 21:54 ` Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 11/51] vfs: Add get_richacl and set_richacl inode operations Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 12/51] vfs: Cache richacl in struct inode Andreas Gruenbacher
2015-11-04 2:03 ` Andreas Dilger
2015-11-04 22:10 ` Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 13/51] richacl: Update the file masks in chmod() Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 14/51] richacl: Check if an acl is equivalent to a file mode Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 15/51] richacl: Create-time inheritance Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 16/51] richacl: Automatic Inheritance Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 17/51] richacl: xattr mapping functions Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 18/51] richacl: Add richacl xattr handler Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 19/51] vfs: Add richacl permission checking Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 20/51] ext4: Add richacl support Andreas Gruenbacher
2015-11-04 2:13 ` Andreas Dilger
2015-11-04 2:19 ` Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 21/51] ext4: Add richacl feature flag Andreas Gruenbacher
2015-11-04 2:18 ` Andreas Dilger
2015-11-04 2:28 ` Andreas Gruenbacher
2015-11-04 2:43 ` Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 22/51] xfs: Fix error path in xfs_get_acl Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 23/51] xfs: Make xfs_set_mode non-static Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 24/51] xfs: Change how listxattr generates synthetic attributes Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 25/51] xfs: Add richacl support Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 26/51] xfs: Plug memory leak in xfs_attrmulti_attr_set Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 27/51] xfs: Fix richacl access by ioctl Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 28/51] richacl: acl editing helper functions Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 29/51] richacl: Move everyone@ aces down the acl Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 30/51] richacl: Propagate everyone@ permissions to other aces Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 31/51] richacl: Set the owner permissions to the owner mask Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 32/51] richacl: Set the other permissions to the other mask Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 33/51] richacl: Isolate the owner and group classes Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 34/51] richacl: Apply the file masks to a richacl Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 35/51] richacl: Create richacl from mode values Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 36/51] nfsd: Keep list of acls to dispose of in compoundargs Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 37/51] nfsd: Use richacls as internal acl representation Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 38/51] nfsd: Add richacl support Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 39/51] nfsd: Add support for the v4.1 dacl attribute Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 40/51] nfsd: Add support for the MAY_CREATE_{FILE,DIR} permissions Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 41/51] richacl: Add support for unmapped identifiers Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 42/51] nfsd: Add support for unmapped richace identifiers Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 43/51] ext4: Don't allow unmapped identifiers in richacls Andreas Gruenbacher
2015-11-04 2:20 ` Andreas Dilger
2015-11-03 15:17 ` [PATCH v13 44/51] xfs: " Andreas Gruenbacher
2015-11-03 15:17 ` Andreas Gruenbacher [this message]
2015-11-03 16:25 ` [PATCH v13 45/51] sunrpc: Allow to demand-allocate pages to encode into Trond Myklebust
2015-11-05 11:07 ` Andreas Gruenbacher
2015-11-05 15:57 ` Trond Myklebust
2015-11-08 22:19 ` Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 46/51] sunrpc: Add xdr_init_encode_pages Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 47/51] nfs: Fix GETATTR bitmap verification Andreas Gruenbacher
2015-11-03 16:30 ` Trond Myklebust
2015-11-03 15:17 ` [PATCH v13 48/51] nfs: Remove unused xdr page offsets in getacl/setacl arguments Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 49/51] nfs: Distinguish missing users and groups from nobody Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 50/51] nfs: Add richacl support Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 51/51] nfs: Add support for the v4.1 dacl attribute Andreas Gruenbacher
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=1446563847-14005-46-git-send-email-agruenba@redhat.com \
--to=agruenba@redhat.com \
--cc=adilger.kernel@dilger.ca \
--cc=anna.schumaker@netapp.com \
--cc=bfields@fieldses.org \
--cc=david@fromorbit.com \
--cc=jlayton@poochiereds.net \
--cc=linux-api@vger.kernel.org \
--cc=linux-cifs@vger.kernel.org \
--cc=linux-ext4@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-nfs@vger.kernel.org \
--cc=trond.myklebust@primarydata.com \
--cc=tytso@mit.edu \
--cc=viro@zeniv.linux.org.uk \
--cc=xfs@oss.sgi.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
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).