The use of wait_on_atomic_t() for waiting on I/O to complete before
unlocking allows us to git rid of the NFS_IO_INPROGRESS flag, and thus the
nfs_iocounter's flags member, and finally the nfs_iocounter altogether.
The count of I/O is moved to the lock context, and the counter
increment/decrement functions become simple enough to open-code.
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
[Trond: Fix up conflict with existing function nfs_wait_atomic_killable()]
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* pnfs_generic:
NFSv4.1/pNFS: Cleanup constify struct pnfs_layout_range arguments
NFSv4.1/pnfs: Cleanup copying of pnfs_layout_range structures
NFSv4.1/pNFS: Cleanup pnfs_mark_matching_lsegs_invalid()
NFSv4.1/pNFS: Fix a race in initiate_file_draining()
NFSv4.1/pNFS: pnfs_error_mark_layout_for_return() must always return layout
NFSv4.1/pNFS: pnfs_mark_matching_lsegs_return() should set the iomode
NFSv4.1/pNFS: Use nfs4_stateid_copy for copying stateids
NFSv4.1/pNFS: Don't pass stateids by value to pnfs_send_layoutreturn()
NFS: Relax requirements in nfs_flush_incompatible
NFSv4.1/pNFS: Don't queue up a new commit if the layout segment is invalid
NFS: Allow multiple commit requests in flight per file
NFS/pNFS: Fix up pNFS write reschedule layering violations and bugs
NFSv4: List stateid information in the callback tracepoints
NFSv4.1/pNFS: Don't return NFS4ERR_DELAY unnecessarily in CB_LAYOUTRECALL
NFSv4.1/pNFS: Ensure we enforce RFC5661 Section 12.5.5.2.1
pNFS: If we have to delay the layout callback, mark the layout for return
NFSv4.1/pNFS: Add a helper to mark the layout as returned
pNFS: Ensure nfs4_layoutget_prepare returns the correct error
Peng Tao points out that the call to pnfs_mark_matching_lsegs_return()
could race with pnfs_put_lseg(), in which case the layout segment is
cleared, but no layoutreturn will be sent.
Fix is to replace the call to pnfs_mark_matching_lsegs_invalid().
Reported-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Fix a bug whereby if all the layout segments could be immediately freed,
the call to pnfs_error_mark_layout_for_return() would never result in
a layoutreturn.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
If pnfs_mark_matching_lsegs_return() needs to mark a layout segment for
return, then it must also set the return iomode.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
If two processes share the same credentials and NFSv4 open stateid, then
allow them both to dirty the same page, even if their nfs_open_context
differs.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
If the layout segment is invalid, then we should not be adding more
write requests to the commit list. Instead, those writes should be
replayed after requesting a new layout.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Allow synchronous RPC calls to wait for pending RPC calls to finish,
but also allow asynchronous ones to just fire off another commit.
With this patch, the xfstests generic/074 test completes in 226s
instead of 242s
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
The flexfiles layout in particular, seems to want to poke around in the
O_DIRECT flags when retransmitting.
This patch sets up an interface to allow it to call back into O_DIRECT
to handle retransmission correctly. It also fixes a potential bug whereby
we could change the behaviour of O_DIRECT if an error is already pending.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* flexfiles:
pNFS/flexfiles: Ensure we record layoutstats even if RPC is terminated early
pNFS: Add flag to track if we've called nfs4_ff_layout_stat_io_start_read/write
pNFS/flexfiles: Fix a statistics gathering imbalance
pNFS/flexfiles: Don't mark the entire layout as failed, when returning it
pNFS/flexfiles: Don't prevent flexfiles client from retrying LAYOUTGET
pnfs/flexfiles: count io stat in rpc_count_stats callback
pnfs/flexfiles: do not mark delay-like status as DS failure
NFS41: map NFS4ERR_LAYOUTUNAVAILABLE to ENODATA
nfs: only remove page from mapping if launder_page fails
nfs: handle request add failure properly
nfs: centralize pgio error cleanup
nfs: clean up rest of reqs when failing to add one
NFS41: pop some layoutget errors to application
pNFS/flexfiles: Support server-supplied layoutstats sampling period
These patches mostly fix send queue ordering issues inside the NFSoRDMA
client, but there are also two patches from Dan Carpenter fixing up smatch
warnings.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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Merge tag 'nfs-rdma-4.5' of git://git.linux-nfs.org/projects/anna/nfs-rdma
NFS: NFSoRDMA Client Side Changes
These patches mostly fix send queue ordering issues inside the NFSoRDMA
client, but there are also two patches from Dan Carpenter fixing up smatch
warnings.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* tag 'nfs-rdma-4.5' of git://git.linux-nfs.org/projects/anna/nfs-rdma:
xprtrdma: Revert commit e7104a2a96 ('xprtrdma: Cap req_cqinit').
xprtrdma: Invalidate in the RPC reply handler
xprtrdma: Add ro_unmap_sync method for all-physical registration
xprtrdma: Add ro_unmap_sync method for FMR
xprtrdma: Add ro_unmap_sync method for FRWR
xprtrdma: Introduce ro_unmap_sync method
xprtrdma: Move struct ib_send_wr off the stack
xprtrdma: Disable RPC/RDMA backchannel debugging messages
xprtrdma: xprt_rdma_free() must not release backchannel reqs
xprtrdma: Fix additional uses of spin_lock_irqsave(rb_lock)
xprtrdma: checking for NULL instead of IS_ERR()
xprtrdma: clean up some curly braces
If the client is promising to return the layout ASAP, then there is no
need to return DELAY and have the server retry. Instead default to the
normal procedure described in RFC5661.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
The RFC requires us to check if the server is recalling a stateid that we
haven't yet received. If so, tell it to wait.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
If the client needs to delay the layout callback, then speed up the recall
process by marking the remaining layout segments to be actively returned
by the client.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This ensures that we don't reuse the stateid if a layout return or
implied layout return means that we've returned all layout segments
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
If we're unable to perform the layoutget due to an invalid open stateid
or a bulk recall, ensure that we return the error so that the caller
can decide on an appropriate action.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Currently, we will only record the layoutstats correctly if the
RPC call successfully obtains a slot. If we exit before that
happens, then we may find ourselves starting the busy timer through
the call in ff_layout_(read|write)_prepare_layoutstats, but never stopping it.
The same thing happens if we're doing DA-DS.
The fix is to ensure that we catch these cases in the rpc_release()
callback.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
When we replay a failed read, write or commit to the dataserver, we
need to ensure that we call ff_layout_read_prepare_v3(),
ff_layout_write_prepare_v3 or ff_layout_commit_prepare_v3() so that we
reset the statistics.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
In pNFS/flexfiles, we want to return the layout without necessarily marking
it as having completely failed. We therefore move the call to
pnfs_layout_io_set_failed() out of pnfs_error_mark_layout_for_return(),
and then ensura that pNFS/files layout calls it separately.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Fix a bug in which flexfiles clients are falling back to I/O through the
MDS even when the FF_FLAGS_NO_IO_THRU_MDS flag is set.
The flexfiles client will always report errors through the LAYOUTRETURN
and/or LAYOUTERROR mechanisms, so it should normally be safe for it
to retry the LAYOUTGET until it fails or succeeds.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
If client ever restarts IO due to some errors, we'll endup
mis-counting IO stats if we do the counting in .rpc_done
callback. Move it to .rpc_count_stats callback that is only
called when releasing RPC.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
We just need to delay and retry in these cases.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Instead of mapping it to EIO that is a fatal error and
fails application. We'll go inband after getting
NFS4ERR_LAYOUTUNAVAILABLE.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Instead of dropping pages when write fails, only do it when
we get fatal failure in launder_page write back.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
When we fail to queue a read page to IO descriptor,
we need to clean it up otherwise it is hanging around
preventing nfs module from being removed.
When we fail to queue a write page to IO descriptor,
we need to clean it up and also save the failure status
to open context. Then at file close, we can try to write
pages back again and drop the page if it fails to writeback
in .launder_page, which will be done in the next patch.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
In case we fail during setting things up for read/write IO, set
pg_error in IO descriptor and do the cleanup in nfs_pageio_add_request,
where we clean up all pages that are still hanging around on the IO
descriptor.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
If we fail to set up things before sending anything over wire,
we need to clean up the reqs that are still attached to the
IO descriptor.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
For ERESTARTSYS/EIO/EROFS/ENOSPC/E2BIG in layoutget, we
should just bail out instead of hiding the error and
retrying inband IO.
Change all the call sites to pop the error all the way up.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Some servers want to be able to control the frequency with which clients
report layoutstats, for instance, in order to monitor QoS for a particular
file or set of file. In order to support this, the flexfiles layout allows
the server to pass this info as a hint in the layout payload.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
xs_reclassify_socket4() and friends used to be called directly.
xs_reclassify_socket() is called instead nowadays.
The xs_reclassify_socketX() helper functions are empty when
CONFIG_DEBUG_LOCK_ALLOC is not defined. Drop them since they have no
callers.
Note that AF_LOCAL still calls xs_reclassify_socketu() directly but is
easily converted to generic xs_reclassify_socket().
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Allow LAYOUTRETURN and DELEGRETURN to use machine credentials if the
server supports it. Add request for OPEN_DOWNGRADE as the close path
also uses that.
Signed-off-by: Andrew Elble <aweits@rit.edu>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This patch fixes the checkpatch.pl error to nfs4sysctl.c:
ERROR: do not initialise statics to 0
Signed-off-by: Wei Tang <tangwei@cmss.chinamobile.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Instead of displaying a layout segment pointer in these tracepoints,
let's use the layout stateid, now that Olga gave us a set of tools for
displaying them.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
pnfs_update_layout is really the "nexus" of layout handling. If it
returns NULL then we end up going through the MDS. This patch adds
some tracepoints to that function that allow us to determine the
cause when we end up going through the MDS unexpectedly.
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Operations to which stateid information is added:
close, delegreturn, open, read, setattr, layoutget, layoutcommit, test_stateid,
write, lock, locku, lockt
Format is "stateid=<seqid>:<crc32 hash stateid.other>", also "openstateid=",
"layoutstateid=", and "lockstateid=" for open_file, layoutget, set_lock
tracepoints.
New function is added to internal.h, nfs_stateid_hash(), to compute the hash
trace_nfs4_setattr() is moved from nfs4_do_setattr() to _nfs4_do_setattr()
to get access to stateid.
trace_nfs4_setattr and trace_nfs4_delegreturn are changed from INODE_EVENT
to new event type, INODE_STATEID_EVENT which is same as INODE_EVENT but adds
stateid information
for locking tracepoints, moved trace_nfs4_set_lock() into _nfs4_do_setlk()
to get access to stateid information, and removed trace_nfs4_lock_reclaim(),
trace_nfs4_lock_expired() as they call into _nfs4_do_setlk() and both were
previously same LOCK_EVENT type.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Pull MIPS fixes from Ralf Baechle:
- Fix bitrot in __get_user_unaligned()
- EVA userspace accessor bug fixes.
- Fix for build issues with certain toolchains.
- Fix build error for VDSO with particular toolchain versions.
- Fix build error due to a variable that should have been removed by an
earlier patch
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Fix bitrot in __get_user_unaligned()
MIPS: Fix build error due to unused variables.
MIPS: VDSO: Fix build error
MIPS: CPS: drop .set mips64r2 directives
MIPS: uaccess: Take EVA into account in [__]clear_user
MIPS: uaccess: Take EVA into account in __copy_from_user()
MIPS: uaccess: Fix strlen_user with EVA
A handful of fixes for OMAP, i.MX, Allwinner and Tegra:
- A clock rate and a PHY setup fix for i.MX6Q/DL
- A couple of fixes for the reduced serial bus (sunxi-rsb) on Allwinner
- UART wakeirq fix for an OMAP4 board, timer config fixes for AM43XX.
- Suspend fix for Tegra124 Chromebooks
- Fix for missing implicit include that's different between ARM/ARM64
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A smallish set of fixes that we've been sitting on for a while now,
flushing the queue here so they go in. Summary:
A handful of fixes for OMAP, i.MX, Allwinner and Tegra:
- A clock rate and a PHY setup fix for i.MX6Q/DL
- A couple of fixes for the reduced serial bus (sunxi-rsb) on
Allwinner
- UART wakeirq fix for an OMAP4 board, timer config fixes for AM43XX.
- Suspend fix for Tegra124 Chromebooks
- Fix for missing implicit include that's different between
ARM/ARM64"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: tegra: Fix suspend hang on Tegra124 Chromebooks
bus: sunxi-rsb: Fix peripheral IC mapping runtime address
bus: sunxi-rsb: Fix primary PMIC mapping hardware address
ARM: dts: Fix UART wakeirq for omap4 duovero parlor
ARM: OMAP2+: AM43xx: select ARM TWD timer
ARM: OMAP2+: am43xx: enable GENERIC_CLOCKEVENTS_BROADCAST
fsl-ifc: add missing include on ARM64
ARM: dts: imx6: Fix Ethernet PHY mode on Ventana boards
ARM: dts: imx: Fix the assigned-clock mismatch issue on imx6q/dl
bus: sunxi-rsb: unlock on error in sunxi_rsb_read()
ARM: dts: sunxi: sun6i-a31s-primo81.dts: add touchscreen axis swapping property
- Fix a thermal management issue introduced by an ACPI processor
driver change made during the 4.3 development cycle that failed
to return 0 from a function on success which triggered an error
cleanup path every time it had been called that deleted useful
data structures created previously (Srinivas Pandruvada).
- Fix a variable data type issue in the arm_big_little cpufreq
driver's SCPI support code added recently that prevents error
handling in there from working correctly (Dan Carpenter).
/
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Merge tag 'pm+acpi-4.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI fixes from Rafael Wysocki:
"These fix an ACPI processor driver regression introduced during the
4.3 cycle and a mistake in the recently added SCPI support in the
arm_big_little cpufreq driver.
Specifics:
- Fix a thermal management issue introduced by an ACPI processor
driver change made during the 4.3 development cycle that failed to
return 0 from a function on success which triggered an error
cleanup path every time it had been called that deleted useful data
structures created previously (Srinivas Pandruvada).
- Fix a variable data type issue in the arm_big_little cpufreq
driver's SCPI support code added recently that prevents error
handling in there from working correctly (Dan Carpenter)"
* tag 'pm+acpi-4.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: scpi-cpufreq: signedness bug in scpi_get_dvfs_info()
ACPI / processor: Fix thermal cooling device regression
Fix a regression which causes reshape to not start properly
sometimes.
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Merge tag 'md/4.4-rc6-fix' of git://neil.brown.name/md
Pull md bugfix from Neil Brown:
"One more md fix for 4.4-rc
Fix a regression which causes reshape to not start properly sometimes"
* tag 'md/4.4-rc6-fix' of git://neil.brown.name/md:
md: remove check for MD_RECOVERY_NEEDED in action_store.
