linux-stable.git/include/linux/nfs_fs.h, branch v3.5.4

NFSv4.1 add nfs_inode book keeping for mdsthreshold

2012-05-24T20:15:48+00:00

Keep track of the number of bytes read or written via buffered, direct, and
mem-mapped i/o for use by mdsthreshold size_io hints.

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust

NFSv4.1 cache mdsthreshold values on OPEN

2012-05-24T20:15:48+00:00

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust

NFS: Add NFSDBG_STATE

2012-05-22T20:45:42+00:00

fs/nfs/nfs4state.c does not yet have any dprintk() call sites, and I'm
about to introduce some.  We will need a new flag for enabling them.

Signed-off-by: Chuck Lever 
Signed-off-by: Trond Myklebust

NFS: Adapt readdirplus to application usage patterns

2012-05-01T23:16:43+00:00

While the use of READDIRPLUS is significantly more efficient than
READDIR followed by many LOOKUP calls, it is still less efficient
than just READDIR if the attributes are not required.

This patch tracks when lookups are attempted on the directory,
and uses that information to selectively disable READDIRPLUS
on that directory.
The first 'readdir' call is always served using READDIRPLUS.
Subsequent calls only use READDIRPLUS if there was a successful
lookup or revalidation on a child in the mean time.

Credit for the original idea should go to Neil Brown. See:
      http://www.spinics.net/lists/linux-nfs/msg19996.html
However, the implementation in this patch differs from Neil's
in that it focuses on tracking lookups rather than calls to
stat().

Signed-off-by: Trond Myklebust 
Cc: Neil Brown

NFS: create struct nfs_commit_info

2012-04-27T18:10:38+00:00

It is COMMIT that is handled the most differently between
the paged and direct paths.  Create a structure that encapsulates
everything either path needs to know about the commit state.

We could use void to hide some of the layout driver stuff, but
Trond suggests pulling it out to ensure type checking, given the
huge changes being made, and the fact that it doesn't interfere
with other drivers.

Signed-off-by: Fred Isaman 
Signed-off-by: Trond Myklebust

NFS: create common nfs_pgio_header for both read and write

2012-04-27T18:10:37+00:00

In order to avoid duplicating all the data in nfs_read_data whenever we
split it up into multiple RPC calls (either due to a short read result
or due to rsize < PAGE_SIZE), we split out the bits that are the same
per RPC call into a separate "header" structure.

The goal this patch moves towards is to have a single header
refcounted by several rpc_data structures.  Thus, want to always refer
from rpc_data to the header, and not the other way.  This patch comes
close to that ideal, but the directio code currently needs some
special casing, isolated in the nfs_direct_[read_write]hdr_release()
functions.  This will be dealt with in a future patch.

Signed-off-by: Fred Isaman 
Signed-off-by: Trond Myklebust

NFS: add a struct nfs_commit_data to replace nfs_write_data in commits

2012-04-27T18:10:37+00:00

Commits don't need the vectors of pages, etc. that writes do. Split out
a separate structure for the commit operation.

Signed-off-by: Fred Isaman 
Signed-off-by: Trond Myklebust

NFS: Fix more NFS debug related build warnings

2012-03-21T13:31:44+00:00

Signed-off-by: Trond Myklebust

nfs: non void functions must return a value

2012-03-21T13:31:44+00:00

Signed-off-by: Stephen Rothwell 
Signed-off-by: Trond Myklebust

SUNRPC/NFS: Add Kbuild dependencies for NFS_DEBUG/RPC_DEBUG

2012-03-20T17:08:26+00:00

This allows us to turn on/off the dprintk() debugging interfaces for
those distributions that don't ship the 'rpcdebug' utility.
It also allows us to add Kbuild dependencies. Specifically, we already
know that dprintk() in general relies on CONFIG_SYSCTL. Now it turns out
that the NFS dprintks depend on CONFIG_CRC32 after we added support
for the filehandle hash.

Reported-by: Paul Gortmaker 
Signed-off-by: Trond Myklebust