linux-toradex.git/fs/nfs/write.c, branch v3.4.16

NFS: put open context on error in nfs_flush_multi

2012-04-20T18:57:30+00:00

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

NFS: check for req==NULL in nfs_try_to_update_request cleanup

2012-04-18T15:05:49+00:00

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

NFS: Remove nfs4_setup_sequence from generic write code

2012-03-21T13:31:45+00:00

This is an NFS v4 specific operation, so it belongs in the NFS v4 code
and not the generic client.

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

NFS: Use cond_resched_lock() to reduce latencies in the commit scans

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

Ensure that we conditionally drop the inode->i_lock when it is safe
to do so in the commit loops.
We do so after locking the nfs_page, but before removing it from the
commit list. We can then use list_safe_reset_next to recover the loop
after the lock is retaken.

Signed-off-by: Trond Myklebust

NFS: ncommit count is being double decremented

2012-03-20T17:05:08+00:00

The decrement is handled by each call to nfs_request_remove_commit_list,
no need to do it again in nfs_scan_commit.

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

NFSv4.1: Clean ups and bugfixes for the pNFS read/writeback/commit code

2012-03-17T15:09:33+00:00

Move more pnfs-isms out of the generic commit code.

Bugfixes:

- filelayout_scan_commit_lists doesn't need to get/put the lseg.
  In fact since it is run under the inode->i_lock, the lseg_put()
  can deadlock.

- Ensure that we distinguish between what needs to be done for
  commit-to-data server and what needs to be done for commit-to-MDS
  using the new flag PG_COMMIT_TO_DS. Otherwise we may end up calling
  put_lseg() on a bucket for a struct nfs_page that got written
  through the MDS.

- Fix a case where we were using list_del() on an nfs_page->wb_list
  instead of list_del_init().

- filelayout_initiate_commit needs to call filelayout_commit_release
  on error instead of the mds_ops->rpc_release(). Otherwise it won't
  clear the commit lock.

Cleanups:

- Let the files layout manage the commit lists for the pNFS case.
  Don't expose stuff like pnfs_choose_commit_list, and the fact
  that the commit buckets hold references to the layout segment
  in common code.

- Cast out the put_lseg() calls for the struct nfs_read/write_data->lseg
  into the pNFS layer from whence they came.

- Let the pNFS layer manage the NFS_INO_PNFS_COMMIT bit.

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

NFS: remove nfs_inode radix tree

2012-03-10T22:14:10+00:00

The radix tree is only being used to compile lists of reqs needing commit.
It is simpler to just put the reqs directly into a list.

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

NFS: remove NFS_PAGE_TAG_LOCKED

2012-03-10T22:13:58+00:00

The last real use of this tag was removed by
commit 7f2f12d963 NFS: Simplify nfs_wb_page()

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

NFSv41: Add a new helper nfs4_init_sequence()

2012-02-01T00:28:06+00:00

Clean up

Signed-off-by: Trond Myklebust

mm: compaction: introduce sync-light migration for use by compaction

2012-01-13T04:13:09+00:00

This patch adds a lightweight sync migrate operation MIGRATE_SYNC_LIGHT
mode that avoids writing back pages to backing storage.  Async compaction
maps to MIGRATE_ASYNC while sync compaction maps to MIGRATE_SYNC_LIGHT.
For other migrate_pages users such as memory hotplug, MIGRATE_SYNC is
used.

This avoids sync compaction stalling for an excessive length of time,
particularly when copying files to a USB stick where there might be a
large number of dirty pages backed by a filesystem that does not support
->writepages.

[aarcange@redhat.com: This patch is heavily based on Andrea's work]
[akpm@linux-foundation.org: fix fs/nfs/write.c build]
[akpm@linux-foundation.org: fix fs/btrfs/disk-io.c build]
Signed-off-by: Mel Gorman 
Reviewed-by: Rik van Riel 
Cc: Andrea Arcangeli 
Cc: Minchan Kim 
Cc: Dave Jones 
Cc: Jan Kara 
Cc: Andy Isaacson 
Cc: Nai Xia 
Cc: Johannes Weiner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds