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| author | Abhishek Kulkarni <adkulkar@umail.iu.edu> | 2009-09-23 13:00:27 -0500 |
|---|---|---|
| committer | Eric Van Hensbergen <ericvh@strongmad.austin.ibm.com> | 2009-09-23 13:03:46 -0500 |
| commit | 60e78d2c993e58d890596d951fff77d5965adcd6 (patch) | |
| tree | 3d53ed7254c613ef8d8de36fdceda25bc493f4f7 /include/net/9p/9p.h | |
| parent | 637d020a02cd734bf27acfc56c6d942cddd9eb80 (diff) | |
| download | linux-60e78d2c993e58d890596d951fff77d5965adcd6.tar.bz2 | |
9p: Add fscache support to 9p
This patch adds a persistent, read-only caching facility for
9p clients using the FS-Cache caching backend.
When the fscache facility is enabled, each inode is associated
with a corresponding vcookie which is an index into the FS-Cache
indexing tree. The FS-Cache indexing tree is indexed at 3 levels:
- session object associated with each mount.
- inode/vcookie
- actual data (pages)
A cache tag is chosen randomly for each session. These tags can
be read off /sys/fs/9p/caches and can be passed as a mount-time
parameter to re-attach to the specified caching session.
Signed-off-by: Abhishek Kulkarni <adkulkar@umail.iu.edu>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'include/net/9p/9p.h')
| -rw-r--r-- | include/net/9p/9p.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h index b77c1478c99f..a7fb54808a23 100644 --- a/include/net/9p/9p.h +++ b/include/net/9p/9p.h @@ -38,6 +38,8 @@ * @P9_DEBUG_SLABS: memory management tracing * @P9_DEBUG_FCALL: verbose dump of protocol messages * @P9_DEBUG_FID: fid allocation/deallocation tracking + * @P9_DEBUG_PKT: packet marshalling/unmarshalling + * @P9_DEBUG_FSC: FS-cache tracing * * These flags are passed at mount time to turn on various levels of * verbosity and tracing which will be output to the system logs. @@ -54,6 +56,7 @@ enum p9_debug_flags { P9_DEBUG_FCALL = (1<<8), P9_DEBUG_FID = (1<<9), P9_DEBUG_PKT = (1<<10), + P9_DEBUG_FSC = (1<<11), }; #ifdef CONFIG_NET_9P_DEBUG |