linux-kernel - [PATCH 6/6] nfs: Enable swap over NFS

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20060825153812.24254.9718.sendpatchset@twins>
Date:	Fri, 25 Aug 2006 17:38:12 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...l.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Rik van Riel <riel@...hat.com>,
	Trond Myklebust <trond.myklebust@....uio.no>
Subject: [PATCH 6/6] nfs: Enable swap over NFS


Now that NFS can handle swap cache pages, add a swapfile method to allow
swapping over NFS.

NOTE: this dummy method is obviously not enough to make it safe.
A more complete version of the nfs_swapfile() function will be present
in the next VM deadlock avoidance patches.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
---
 fs/nfs/file.c |    6 ++++++
 1 file changed, 6 insertions(+)

Index: linux-2.6/fs/nfs/file.c
===================================================================
--- linux-2.6.orig/fs/nfs/file.c
+++ linux-2.6/fs/nfs/file.c
@@ -315,6 +315,11 @@ static int nfs_release_page(struct page 
 	return !nfs_wb_page(page_file_mapping(page)->host, page);
 }
 
+static int nfs_swapfile(struct address_space *mapping, int enable)
+{
+	return 0;
+}
+
 const struct address_space_operations nfs_file_aops = {
 	.readpage = nfs_readpage,
 	.readpages = nfs_readpages,
@@ -328,6 +333,7 @@ const struct address_space_operations nf
 #ifdef CONFIG_NFS_DIRECTIO
 	.direct_IO = nfs_direct_IO,
 #endif
+	.swapfile = nfs_swapfile,
 };
 
 /* 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/