linux/include
NeilBrown 8478eaa16e NFSv4: use exponential retry on NFS4ERR_DELAY for async requests.
Currently asynchronous NFSv4 request will be retried with
exponential timeout (from 1/10 to 15 seconds), but async
requests will always use a 15second retry.

Some "async" requests are really synchronous though.  The
async mechanism is used to allow the request to continue if
the requesting process is killed.
In those cases, an exponential retry is appropriate.

For example, if two different clients both open a file and
get a READ delegation, and one client then unlinks the file
(while still holding an open file descriptor), that unlink
will used the "silly-rename" handling which is async.
The first rename will result in NFS4ERR_DELAY while the
delegation is reclaimed from the other client.  The rename
will not be retried for 15 seconds, causing an unlink to take
15 seconds rather than 100msec.

This patch only added exponential timeout for async unlink and
async rename.  Other async calls, such as 'close' are sometimes
waited for so they might benefit from exponential timeout too.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2014-09-24 23:22:47 -04:00
..
acpi ACPI / scan: not cache _SUN value in struct acpi_device_pnp 2014-09-03 22:41:14 +02:00
asm-generic This is the bulk of GPIO changes for the v3.17 development 2014-08-08 18:00:35 -07:00
clocksource
crypto
drm drm/radeon: add additional SI pci ids 2014-08-22 10:47:59 -04:00
dt-bindings Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2014-08-11 07:14:01 -07:00
keys
kvm
linux NFSv4: use exponential retry on NFS4ERR_DELAY for async requests. 2014-09-24 23:22:47 -04:00
math-emu
media
memory
misc
net tcp: don't allow syn packets without timestamps to pass tcp_tw_recycle logic 2014-08-14 14:38:54 -07:00
pcmcia
ras
rdma Merge branches 'core', 'cxgb4', 'ipoib', 'iser', 'iwcm', 'mad', 'misc', 'mlx4', 'mlx5', 'ocrdma' and 'srp' into for-next 2014-08-14 08:58:04 -07:00
rxrpc
scsi SCSI misc on 20140815 2014-08-15 18:28:58 -06:00
soc/tegra
sound ASoC: core: fix .info for SND_SOC_BYTES_TLV 2014-08-18 08:59:12 -05:00
target
trace Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2014-08-14 10:14:07 -06:00
uapi Merge branch 'akpm' (fixes from Andrew Morton) 2014-08-29 16:28:29 -07:00
video fbdev changes for 3.17 2014-08-08 18:09:33 -07:00
xen - Remove unused V2 grant table support. 2014-08-07 11:33:15 -07:00
Kbuild