linux-toradex.git/include/linux/nfs_fs.h, branch v3.6

NFS: Fix the initialisation of the readdir 'cookieverf' array

2012-09-04T18:52:42+00:00

When the NFS_COOKIEVERF helper macro was converted into a static
inline function in commit 99fadcd764 (nfs: convert NFS_*(inode)
helpers to static inline), we broke the initialisation of the
readdir cookies, since that depended on doing a memset with an
argument of 'sizeof(NFS_COOKIEVERF(inode))' which therefore
changed from sizeof(be32 cookieverf[2]) to sizeof(be32 *).

At this point, NFS_COOKIEVERF seems to be more of an obfuscation
than a helper, so the best thing would be to just get rid of it.

Also see: https://bugzilla.kernel.org/show_bug.cgi?id=46881

Reported-by: Andi Kleen 
Reported-by: David Binderman 
Signed-off-by: Trond Myklebust 
Cc: stable@vger.kernel.org

Merge branch 'akpm' (Andrew's patch-bomb)

2012-08-01T02:25:39+00:00

Merge Andrew's second set of patches:
 - MM
 - a few random fixes
 - a couple of RTC leftovers

* emailed patches from Andrew Morton : (120 commits)
  rtc/rtc-88pm80x: remove unneed devm_kfree
  rtc/rtc-88pm80x: assign ret only when rtc_register_driver fails
  mm: hugetlbfs: close race during teardown of hugetlbfs shared page tables
  tmpfs: distribute interleave better across nodes
  mm: remove redundant initialization
  mm: warn if pg_data_t isn't initialized with zero
  mips: zero out pg_data_t when it's allocated
  memcg: gix memory accounting scalability in shrink_page_list
  mm/sparse: remove index_init_lock
  mm/sparse: more checks on mem_section number
  mm/sparse: optimize sparse_index_alloc
  memcg: add mem_cgroup_from_css() helper
  memcg: further prevent OOM with too many dirty pages
  memcg: prevent OOM with too many dirty pages
  mm: mmu_notifier: fix freed page still mapped in secondary MMU
  mm: memcg: only check anon swapin page charges for swap cache
  mm: memcg: only check swap cache pages for repeated charging
  mm: memcg: split swapin charge function into private and public part
  mm: memcg: remove needless !mm fixup to init_mm when charging
  mm: memcg: remove unneeded shmem charge type
  ...

nfs: enable swap on NFS

2012-08-01T01:42:48+00:00

Implement the new swapfile a_ops for NFS and hook up ->direct_IO.  This
will set the NFS socket to SOCK_MEMALLOC and run socket reconnect under
PF_MEMALLOC as well as reset SOCK_MEMALLOC before engaging the protocol
->connect() method.

PF_MEMALLOC should allow the allocation of struct socket and related
objects and the early (re)setting of SOCK_MEMALLOC should allow us to
receive the packets required for the TCP connection buildup.

[jlayton@redhat.com: Restore PF_MEMALLOC task flags in all cases]
[dfeng@redhat.com: Fix handling of multiple swap files]
[a.p.zijlstra@chello.nl: Original patch]
Signed-off-by: Mel Gorman 
Acked-by: Rik van Riel 
Cc: Christoph Hellwig 
Cc: David S. Miller 
Cc: Eric B Munson 
Cc: Eric Paris 
Cc: James Morris 
Cc: Mel Gorman 
Cc: Mike Christie 
Cc: Neil Brown 
Cc: Sebastian Andrzej Siewior 
Cc: Trond Myklebust 
Cc: Xiaotian Feng 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

NFS: Convert v4 into a module

2012-07-30T23:06:52+00:00

This patch exports symbols needed by the v4 module.  In addition, I also
switch over to using IS_ENABLED() to check if CONFIG_NFS_V4 or
CONFIG_NFS_V4_MODULE are set.

The module (nfs4.ko) will be created in the same directory as nfs.ko and
will be automatically loaded the first time you try to mount over NFS v4.

Signed-off-by: Bryan Schumaker 
Signed-off-by: Trond Myklebust

NFS: Split out NFS v3 inode operations

2012-07-17T17:33:03+00:00

This patch moves the NFS v3 file and directory inode functions into
files that are only compiled whet CONFIG_NFS_V3 is enabled.

Signed-off-by: Bryan Schumaker 
Signed-off-by: Trond Myklebust

NFS: Split out NFS v2 inode operations

2012-07-17T17:32:55+00:00

This patch moves the NFS v2 file and directory inode functions into
files that are only compiled whet CONFIG_NFS_V2 is enabled.

Signed-off-by: Bryan Schumaker 
Signed-off-by: Trond Myklebust

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