linux.git/fs/nfs/flexfilelayout, branch v4.10

ktime: Get rid of ktime_equal()

2016-12-25T16:21:23+00:00

No point in going through loops and hoops instead of just comparing the
values.

Signed-off-by: Thomas Gleixner 
Cc: Peter Zijlstra

ktime: Get rid of the union

2016-12-25T16:21:22+00:00

ktime is a union because the initial implementation stored the time in
scalar nanoseconds on 64 bit machine and in a endianess optimized timespec
variant for 32bit machines. The Y2038 cleanup removed the timespec variant
and switched everything to scalar nanoseconds. The union remained, but
become completely pointless.

Get rid of the union and just keep ktime_t as simple typedef of type s64.

The conversion was done with coccinelle and some manual mopping up.

Signed-off-by: Thomas Gleixner 
Cc: Peter Zijlstra

pNFS/flexfiles: delete deviceid, don't mark inactive

2016-12-19T22:29:45+00:00

Instead of marking a device inactive, remove it from the cache entirely.

Flexfiles has a way to report errors back to the server, so we don't want
to stop devices from being tried again for 120 seconds.

Signed-off-by: Weston Andros Adamson 
Signed-off-by: Trond Myklebust

pNFS/flexfiles: Ensure we have enough buffer for layoutreturn

2016-12-10T01:26:59+00:00

The flexfiles client can piggyback both layout errors and layoutstats
as part of the layoutreturn. Both these payloads can get large, with
20 layout error entries taking up about 1.2K, and 4 layoutstats entries
taking up another 1K.
This patch allows a maximum payload of 4k by allocating a full page.

Signed-off-by: Trond Myklebust

pNFS/flexfiles: Remove a redundant parameter in ff_layout_encode_ioerr()

2016-12-10T01:26:58+00:00

Signed-off-by: Trond Myklebust

pNFS/flexfiles: Fix a deadlock on LAYOUTGET

2016-12-09T02:49:57+00:00

  We encountered a deadlock where the SEQUENCE that accompanied the
LAYOUTGET triggered a session drain, while ff_layout_alloc_lseg
triggered a GETDEVICEINFO.  The GETDEVICEINFO hung waiting for the
session drain, while the LAYOUTGET held the slot waiting for
alloc_lseg to finish.
  Avoid this by moving the call to nfs4_find_get_deviceid out of
ff_layout_alloc_lseg and into nfs4_ff_layout_prepare_ds.

Signed-off-by: Fred Isaman 
[dros@primarydata.com: pNFS/flexfiles: fix races in ff_layout_mirror_valid]
Signed-off-by: Weston Andros Adamson 
Signed-off-by: Trond Myklebust

pNFS/flexfiles: Fix ff_layout_add_ds_error_locked()

2016-12-07T18:41:58+00:00

When we're merging an old entry into our new entry, we want to ensure that
we add the list entry in the correct place.

Signed-off-by: Trond Myklebust

pNFS/flexfiles: Support sending layoutstats in layoutreturn

2016-12-03T20:37:46+00:00

Add the ability to send an array of layoutstats entries as part of
layoutreturn.

Signed-off-by: Trond Myklebust

pNFS/flexfiles: Minor refactoring before adding iostats to layoutreturn

2016-12-03T20:37:45+00:00

Signed-off-by: Trond Myklebust

NFS: Fix up read of mirror stats

2016-12-03T20:37:44+00:00

Need to lock while reading in order to ensure 64-bit reads are correct.

Signed-off-by: Trond Myklebust