--- /dev/null
+From: Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org>
+Subject: Re: [RFC][PATCH 04/10] cifs: define server-level cache index objects
+ and register them with FS-Cache
+Date: Wed, 23 Jun 2010 11:04:39 +0530
+Lines: 61
+Message-ID: <4C219CEF.5000003@suse.de>
+References: <yes> <1277220198-3522-1-git-send-email-sjayaraman@suse.de> <20100622175214.4c56234f@corrin.poochiereds.net>
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+Cc: Steve French <smfrench-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
+ linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
+ David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
+To: Jeff Layton <jlayton-vpEMnDpepFuMZCB2o+C8xQ@public.gmane.org>
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+Archived-At: <http://permalink.gmane.org/gmane.linux.kernel/1001998>
+
+On 06/23/2010 03:22 AM, Jeff Layton wrote:
+> On Tue, 22 Jun 2010 20:53:18 +0530
+> Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org> wrote:
+>
+>> Define server-level cache index objects (as managed by TCP_ServerInfo structs).
+>> Each server object is created in the CIFS top-level index object and is itself
+>> an index into which superblock-level objects are inserted.
+>>
+>> Currently, the server objects are keyed by hostname.
+>>
+>> Signed-off-by: Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org>
+>> ---
+>> fs/cifs/Makefile | 2 +-
+>> fs/cifs/cache.c | 25 +++++++++++++++++++++++++
+>> fs/cifs/cifsglob.h | 3 +++
+>> fs/cifs/connect.c | 4 ++++
+>> fs/cifs/fscache.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
+>> fs/cifs/fscache.h | 12 ++++++++++++
+>> 6 files changed, 92 insertions(+), 1 deletion(-)
+>> create mode 100644 fs/cifs/fscache.c
+>>
+>> Index: cifs-2.6/fs/cifs/Makefile
+>> ===================================================================
+>> --- cifs-2.6.orig/fs/cifs/Makefile
+>> +++ cifs-2.6/fs/cifs/Makefile
+>> @@ -12,4 +12,4 @@ cifs-$(CONFIG_CIFS_UPCALL) += cifs_spneg
+>>
+>> cifs-$(CONFIG_CIFS_DFS_UPCALL) += dns_resolve.o cifs_dfs_ref.o
+>>
+>> -cifs-$(CONFIG_CIFS_FSCACHE) += cache.o
+>> +cifs-$(CONFIG_CIFS_FSCACHE) += fscache.o cache.o
+>> Index: cifs-2.6/fs/cifs/cache.c
+>> ===================================================================
+>> --- cifs-2.6.orig/fs/cifs/cache.c
+>> +++ cifs-2.6/fs/cifs/cache.c
+>> @@ -51,3 +51,28 @@ void cifs_fscache_unregister(void)
+>> fscache_unregister_netfs(&cifs_fscache_netfs);
+>> }
+>>
+>> +/*
+>> + * Server object currently keyed by hostname
+>> + */
+>> +static uint16_t cifs_server_get_key(const void *cookie_netfs_data,
+>> + void *buffer, uint16_t maxbuf)
+>> +{
+>> + const struct TCP_Server_Info *server = cookie_netfs_data;
+>> + uint16_t len = strnlen(server->hostname, sizeof(server->hostname));
+>> +
+>
+> Would a tuple of address/family/port be a better choice here? Imagine I
+> mount "foo" and then later mount "foor.bar.baz". If they are the same
+> address and only the UNC differs, then you won't get the benefit of
+> the cache, right?
+>
+
+Good point. I'll fix it up when I do a respin.
+
+Thanks,
+
+--
+Suresh Jayaraman
+
+
projects / notmuch / blobdiff