--- /dev/null
+From: Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org>
+Subject: [RFC][PATCH 00/10] cifs: local caching support using FS-Cache
+Date: Tue, 22 Jun 2010 20:50:05 +0530
+Lines: 66
+Message-ID: <1277220005-3322-1-git-send-email-sjayaraman@suse.de>
+References: <yes>
+Cc: 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: Steve French <smfrench-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
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+Archived-At: <http://permalink.gmane.org/gmane.linux.kernel/1001756>
+
+This patchset is a first stab at adding persistent, local caching facility for
+CIFS using the FS-Cache interface.
+
+The index hierarchy which is mainly used to locate a file object or discard
+a certain subset of the files cached, currently has three levels:
+ - Server
+ - Share
+ - File
+
+The server index object is keyed by hostname of the server. The superblock
+index object is keyed by the sharename and the inode object is keyed by the
+UniqueId. The cache coherency is ensured by checking the 'LastWriteTime' and
+size of file.
+
+To use this, apply this patchset in order, mount the share with rsize=4096 and
+try copying a huge file (say few hundred MBs) from mount point to local
+filesystem. During the first time, the cache will be initialized. When you copy
+the second time, it should read from the local cache.
+
+To reduce the impact of page cache and see the local caching in action
+readily, try doing a sync and drop the caches by doing:
+ sync; echo 3 > /proc/sys/vm/drop_caches
+
+Known issues
+-------------
+ - the cache coherency check may not be reliable always as some
+ CIFS servers are known not to update mtime until the filehandle is
+ closed.
+ - not all the Servers under all circumstances provide a unique
+ 'UniqueId'.
+
+Todo's
+-------
+ - improvements to avoid potential key collisions
+ - address the above known issues
+
+This set is lightly tested and all the bugs seen during my testing have been
+fixed. However, this can be considered as an RFC for now.
+
+Any Comments or Suggestions are welcome.
+
+Suresh Jayaraman (10)
+ cifs: add kernel config option for CIFS Client caching support
+ cifs: guard cifsglob.h against multiple inclusion
+ cifs: register CIFS for caching
+ cifs: define server-level cache index objects and register them with FS-Cache
+ cifs: define superblock-level cache index objects and register them
+ cifs: define inode-level cache object and register them
+ cifs: FS-Cache page management
+ cifs: store pages into local cache
+ cifs: read pages from FS-Cache
+ cifs: add mount option to enable local caching
+
+ Kconfig | 9 ++
+ Makefile | 2
+ cache.c | 251 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ cifs_fs_sb.h | 1
+ cifsfs.c | 15 +++
+ cifsglob.h | 14 +++
+ connect.c | 16 +++
+ file.c | 51 +++++++++++
+ fscache.c | 244 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ fscache.h | 135 +++++++++++++++++++++++++++++++
+ inode.c | 4
+ 11 files changed, 742 insertions(+)
+
+
+
projects / notmuch / blobdiff