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2018-05-31btrfs: Add unprivileged ioctl which returns subvolume informationTomohiro Misono
Add new unprivileged ioctl BTRFS_IOC_GET_SUBVOL_INFO which returns the information of subvolume containing this inode. (i.e. returns the information in ROOT_ITEM and ROOT_BACKREF.) Reviewed-by: Gu Jinxiang <gujx@cn.fujitsu.com> Tested-by: Gu Jinxiang <gujx@cn.fujitsu.com> Signed-off-by: Tomohiro Misono <misono.tomohiro@jp.fujitsu.com> [ minor style fixes, update struct comments ] Signed-off-by: David Sterba <dsterba@suse.com>
2018-05-31xfrm Fix potential error pointer dereference in xfrm_bundle_create.Steffen Klassert
We may derference an invalid pointer in the error path of xfrm_bundle_create(). Fix this by returning this error pointer directly instead of assigning it to xdst0. Fixes: 45b018beddb6 ("ipsec: Create and use new helpers for dst child access.") Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2018-05-31m68k: Set default dma mask for platform devicesFinn Thain
This avoids a WARNING splat when loading the macsonic or macmace driver. Please see commit 205e1b7f51e4 ("dma-mapping: warn when there is no coherent_dma_mask"). This implementation of arch_setup_pdev_archdata() differs from the powerpc one, in that this one avoids clobbering a device dma mask which has already been initialized. Cc: Christoph Hellwig <hch@lst.de> Cc: Greg Ungerer <gerg@linux-m68k.org> Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Acked-by: Greg Ungerer <gerg@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2018-05-30fs: clear writeback errors in inode_init_alwaysDarrick J. Wong
In inode_init_always(), we clear the inode mapping flags, which clears any retained error (AS_EIO, AS_ENOSPC) bits. Unfortunately, we do not also clear wb_err, which means that old mapping errors can leak through to new inodes. This is crucial for the XFS inode allocation path because we recycle old in-core inodes and we do not want error state from an old file to leak into the new file. This bug was discovered by running generic/036 and generic/047 in a loop and noticing that the EIOs generated by the collision of direct and buffered writes in generic/036 would survive the remount between 036 and 047, and get reported to the fsyncs (on different files!) in generic/047. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Brian Foster <bfoster@redhat.com>
2018-05-30smb3: add tracepoints for smb2/smb3 openSteve French
add two tracepoints for open completion. One for error one for completion (open_done). Sample output below TASK-PID CPU# |||| TIMESTAMP FUNCTION | | | |||| | | bash-15348 [007] .... 42441.027492: smb3_enter: cifs_lookup: xid=45 bash-15348 [007] .... 42441.028214: smb3_cmd_err: sid=0x6173e4ce tid=0xa05150e6 cmd=5 mid=105 status=0xc0000034 rc=-2 bash-15348 [007] .... 42441.028219: smb3_open_err: xid=45 sid=0x6173e4ce tid=0xa05150e6 cr_opts=0x0 des_access=0x80 rc=-2 bash-15348 [007] .... 42441.028225: smb3_exit_done: cifs_lookup: xid=45 fop777-24560 [002] .... 42442.627617: smb3_enter: cifs_revalidate_dentry_attr: xid=46 fop777-24560 [003] .... 42442.628301: smb3_cmd_err: sid=0x6173e4ce tid=0xa05150e6 cmd=5 mid=106 status=0xc0000034 rc=-2 fop777-24560 [003] .... 42442.628319: smb3_open_err: xid=46 sid=0x6173e4ce tid=0xa05150e6 cr_opts=0x0 des_access=0x80 rc=-2 fop777-24560 [003] .... 42442.628335: smb3_enter: cifs_atomic_open: xid=47 fop777-24560 [003] .... 42442.629587: smb3_cmd_done: sid=0x6173e4ce tid=0xa05150e6 cmd=5 mid=107 fop777-24560 [003] .... 42442.629592: smb3_open_done: xid=47 sid=0x6173e4ce tid=0xa05150e6 fid=0xb8a0984d cr_opts=0x40 des_access=0x40000080 Signed-off-by: Steve French <smfrench@gmail.com>
2018-05-30block: fixup bioset_integrity_create() callJens Axboe
Missed converting the bioset_integrity_create() bounce bio set call. Fixes: 338aa96d5661 ("block: convert bounce, q->bio_split to bioset_init()/mempool_init()") Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30cifs: add debug output to show nocase mount optionSteve French
For smb1 nocase can be specified on mount. Allow displaying it in debug data. Signed-off-by: Steve French <smfrench@gmail.com>
2018-05-30smb3: add define for id for posix create context and corresponding structSteve French
Signed-off-by: Steve French <smfrench@gmail.com>
2018-05-31Merge tag 'drm-misc-fixes-2018-05-30' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-misc into drm-fixes dw-hdmi: Fix Oops regression from rc1 (Neil) Cc: Neil Armstrong <narmstrong@baylibre.com> * tag 'drm-misc-fixes-2018-05-30' of git://anongit.freedesktop.org/drm/drm-misc: drm/bridge/synopsys: dw-hdmi: fix dw_hdmi_setup_rx_sense
2018-05-30cifs: update smb2_check_message to handle PDUs without a 4 byte length headerRonnie Sahlberg
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-05-30Merge tag 'for-linus-20180530' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block fix from Jens Axboe: "Just a single fix that should make it into this release, fixing a regression with T10-DIF on NVMe" * tag 'for-linus-20180530' of git://git.kernel.dk/linux-block: nvme: fix extended data LBA supported setting
2018-05-30Merge tag 'selinux-pr-20180530' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux Pull SELinux fix from Paul Moore: "One more small fix for SELinux: a small string length fix found by KASAN. I dislike sending patches this late in the release cycle, but this patch fixes a legitimate problem, is very small, limited in scope, and well understood. There are two threads with more information on the problem, the latest is linked below: https://marc.info/?t=152723737400001&r=1&w=2 Stephen points out in the thread linked above: 'Such a setxattr() call can only be performed by a process with CAP_MAC_ADMIN that is also allowed mac_admin permission in SELinux policy. Consequently, this is never possible on Android (no process is allowed mac_admin permission, always enforcing) and is only possible in Fedora/RHEL for a few domains (if enforcing)'" * tag 'selinux-pr-20180530' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux: selinux: KASAN: slab-out-of-bounds in xattr_getsecurity
2018-05-30block: Drop bioset_create()Kent Overstreet
All users have been converted to bioset_init(), kill off the old API. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30xfs: convert to bioset_init()/mempool_init()Kent Overstreet
Convert XFS to embedded bio sets. Acked-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30btrfs: convert to bioset_init()/mempool_init()Kent Overstreet
Convert btrfs to embedded bio sets. Acked-by: Chris Mason <clm@fb.com> Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30fs: convert block_dev.c to bioset_init()Kent Overstreet
Convert block DIO code to embedded bio sets. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30target: convert to bioset_init()/mempool_init()Kent Overstreet
Convert the target code to embedded bio sets. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30dm: convert to bioset_init()/mempool_init()Kent Overstreet
Convert dm to embedded bio sets. Acked-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30md: convert to bioset_init()/mempool_init()Kent Overstreet
Convert md to embedded bio sets. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30bcache: convert to bioset_init()/mempool_init()Kent Overstreet
Convert bcache to embedded bio sets. Reviewed-by: Coly Li <colyli@suse.de> Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30lightnvm: convert to bioset_init()/mempool_init()Kent Overstreet
Convert lightnvm to embedded bio sets. Reviewed-by: Javier González <javier@cnexlabs.com> Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30pktcdvd: convert to bioset_init()/mempool_init()Kent Overstreet
Convert pktcdvd to embedded bio sets. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30drbd: convert to bioset_init()/mempool_init()Kent Overstreet
Convert drbd to embedded bio sets and mempools. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30block: convert bounce, q->bio_split to bioset_init()/mempool_init()Kent Overstreet
Convert the core block functionality to embedded bio sets. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30Merge branch 'linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto fix from Herbert Xu: "This fixes a potential kernel panic in the inside-secure driver" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: inside-secure - do not use memset on MMIO
2018-05-30smb3: allow "posix" mount option to enable new SMB311 protocol extensionsSteve French
If "posix" (or synonym "unix" for backward compatibility) specified on mount, and server advertises support for SMB3.11 POSIX negotiate context, then enable the new posix extensions on the tcon. This can be viewed by looking for "posix" in the mount options displayed by /proc/mounts for that mount (ie if posix extensions allowed by server and the experimental POSIX extensions also requested on the mount by specifying "posix" at mount time). Also add check to warn user if conflicting unix/nounix or posix/noposix specified on mount. Signed-off-by: Steve French <smfrench@gmail.com>
2018-05-30smb3: add support for posix negotiate contextSteve French
Unlike CIFS where UNIX/POSIX extensions had been negotiatable, SMB3 did not have POSIX extensions yet. Add the new SMB3.11 POSIX negotiate context to ask the server whether it can support POSIX (and thus whether we can send the new POSIX open context). Signed-off-by: Steve French <smfrench@gmail.com>
2018-05-30cifs: allow disabling less secure legacy dialectsSteve French
To improve security it may be helpful to have additional ways to restrict the ability to override the default dialects (SMB2.1, SMB3 and SMB3.02) on mount with old dialects (CIFS/SMB1 and SMB2) since vers=1.0 (CIFS/SMB1) and vers=2.0 are weaker and less secure. Add a module parameter "disable_legacy_dialects" (/sys/module/cifs/parameters/disable_legacy_dialects) which can be set to 1 (or equivalently Y) to forbid use of vers=1.0 or vers=2.0 on mount. Also cleans up a few build warnings about globals for various module parms. Signed-off-by: Steve French <smfrench@gmail.com>
2018-05-30cifs: make minor clarifications to module params for cifs.koSteve French
Note which ones of the module params are cifs dialect only (N/A for default dialect now that has moved to SMB2.1 or later) Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
2018-05-30cifs: show the "w" bit for writeable /proc/fs/cifs/* filesRonnie Sahlberg
RHBZ: 1539612 Lets show the "w" bit for those files have a .write interface to set/enable/... the feature. Reported-by: Xiaoli Feng <xifeng@redhat.com> Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-05-30smb3: add module alias for smb3 to cifs.koSteve French
We really don't want to be encouraging people to use the old (less secure) cifs dialect (SMB1) and it can be confusing for them with SMB3 (or later) being recommended but the module name is cifs. Add a module alias for "smb3" to cifs.ko to make this less confusing. Signed-off-by: Steve French <smfrench@gmail.com>
2018-05-30cifs: return error on invalid value written to cifsFYIRonnie Sahlberg
RHBZ: 1539617 Check that, if it is not a boolean, the value the user tries to write to /proc/fs/cifs/cifsFYI is valid and return an error if not. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reported-by: Xiaoli Feng <xifeng@redhat.com>
2018-05-30cifs: invalidate cache when we truncate a fileRonnie Sahlberg
RHBZ: 1566345 When truncating a file we always do this synchronously to the server. Thus we need to make sure that the cached inode metadata is marked as stale so that on next getattr we will refresh the metadata. In this particular bug we want to ensure that both ctime and mtime are updated and become visible to the application after a truncate. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reported-by: Xiaoli Feng <xifeng@redhat.com>
2018-05-30smb3: print tree id in debugdata in proc to be able to help loggingSteve French
When loooking at the logs for the new trace-cmd tracepoints for cifs, it would help to know which tid is for which share (UNC name) so update /proc/fs/cifs/DebugData to display the tid. Also display Maximal Access which was missing as well. Now the entry for typical entry for a tcon (in proc/fs/cifs/) looks like: 1) \\localhost\test Mounts: 1 DevInfo: 0x20 Attributes: 0x1006f PathComponentMax: 255 Status: 1 type: DISK Share Capabilities: None Aligned, Partition Aligned, Share Flags: 0x0 tid: 0xe0632a55 Optimal sector size: 0x200 Maximal Access: 0x1f01ff Signed-off-by: Steve French <smfrench@gmail.com>
2018-05-30smb3: add additional ftrace entry points for entry/exit to cifs.koSteve French
Signed-off-by: Steve French <smfrench@gmail.com>
2018-05-30smb3: fix various xid leaksSteve French
Fix a few cases where we were not freeing the xid which led to active requests being non-zero at unmount time. Signed-off-by: Steve French <smfrench@gmail.com> CC: Stable <stable@vger.kernel.org> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
2018-05-30CIFS: Introduce offset for the 1st page in data transfer structuresLong Li
When direct I/O is used, the data buffer may not always align to page boundaries. Introduce a page offset in transport data structures to describe the location of the buffer within the page. Also change the function to pass the page offset when sending data to transport. Signed-off-by: Long Li <longli@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-05-30Btrfs: clean up error handling in btrfs_truncate()Omar Sandoval
btrfs_truncate() uses two variables for error handling, ret and err (if this sounds familiar, it's because btrfs_truncate_inode_items() did something similar). This is error prone, as was made evident by "Btrfs: fix error handling in btrfs_truncate()". We only have err because we don't want to mask an error if we call btrfs_update_inode() and btrfs_end_transaction(), so let's make that its own scoped return variable and use ret everywhere else. Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>
2018-05-30platform/chrome: Use to_cros_ec_dev more broadlyGwendal Grignou
Move to_cros_ec_dev macro to cros_ec.h and use it when the private ec object is needed from device object. Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Benson Leung <bleung@chromium.org>
2018-05-30blk-throttle: return proper bool type to caller instead of 0/1Chengguang Xu
Change to return true/false only for bool type return code. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30perf tools: Fix perf.data format description of NRCPUS headerArnaldo Carvalho de Melo
In the perf.data HEADER_CPUDESC feadure header we store first the number of available CPUs in the system, then the number of CPUs at the time of writing the header, not the other way around. Reported-by: Thomas-Mich Richter <tmricht@linux.ibm.com> Acked-by: Andi Kleen <ak@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: He Kuang <hekuang@huawei.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Lakshman Annadorai <lakshmana@google.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Simon Que <sque@chromium.org> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-j7o92acm2vnxjv70y4o3swoc@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-05-30perf script python: Add addr into perf sample dictLeo Yan
ARM CoreSight auxtrace uses 'sample->addr' to record the target address for branch instructions, so the data of 'sample->addr' is required for tracing data analysis. This commit collects data of 'sample->addr' into perf sample dict, finally can be used for python script for parsing event. Signed-off-by: Leo Yan <leo.yan@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Walker <robert.walker@arm.com> Cc: Tor Jeremiassen <tor@ti.com> Cc: coresight@lists.linaro.org Cc: kim.phillips@arm.co Cc: linux-arm-kernel@lists.infradead.org Cc: linux-doc@vger.kernel.org Link: http://lkml.kernel.org/r/1527497103-3593-3-git-send-email-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-05-30perf data: Update documentation section on cpu topologyThomas Richter
Add an explanation of each cpu's core and socket identifier to the perf.data file format documentation. Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20180528074433.16652-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-05-30perf cs-etm: Fix indexing for decoder packet queueMathieu Poirier
The tail of a queue is supposed to be pointing to the next available slot in a queue. In this implementation the tail is incremented before it is used and as such points to the last used element, something that has the immense advantage of centralizing tail management at a single location and eliminating a lot of redundant code. But this needs to be taken into consideration on the dequeueing side where the head also needs to be incremented before it is used, or the first available element of the queue will be skipped. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Tested-by: Leo Yan <leo.yan@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Walker <robert.walker@arm.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1527289854-10755-1-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-05-30perf bpf: Fix NULL return handling in bpf__prepare_load()YueHaibing
bpf_object__open()/bpf_object__open_buffer can return error pointer or NULL, check the return values with IS_ERR_OR_NULL() in bpf__prepare_load and bpf__prepare_load_buffer Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: netdev@vger.kernel.org Link: https://lkml.kernel.org/n/tip-psf4xwc09n62al2cb9s33v9h@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-05-30drm/bridge/synopsys: dw-hdmi: fix dw_hdmi_setup_rx_senseNeil Armstrong
The dw_hdmi_setup_rx_sense exported function should not use struct device to recover the dw-hdmi context using drvdata, but take struct dw_hdmi directly like other exported functions. This caused a regression using Meson DRM on S905X since v4.17-rc1 : Internal error: Oops: 96000007 [#1] PREEMPT SMP [...] CPU: 0 PID: 124 Comm: irq/32-dw_hdmi_ Not tainted 4.17.0-rc7 #2 Hardware name: Libre Technology CC (DT) [...] pc : osq_lock+0x54/0x188 lr : __mutex_lock.isra.0+0x74/0x530 [...] Process irq/32-dw_hdmi_ (pid: 124, stack limit = 0x00000000adf418cb) Call trace: osq_lock+0x54/0x188 __mutex_lock_slowpath+0x10/0x18 mutex_lock+0x30/0x38 __dw_hdmi_setup_rx_sense+0x28/0x98 dw_hdmi_setup_rx_sense+0x10/0x18 dw_hdmi_top_thread_irq+0x2c/0x50 irq_thread_fn+0x28/0x68 irq_thread+0x10c/0x1a0 kthread+0x128/0x130 ret_from_fork+0x10/0x18 Code: 34000964 d00050a2 51000484 9135c042 (f864d844) ---[ end trace 945641e1fbbc07da ]--- note: irq/32-dw_hdmi_[124] exited with preempt_count 1 genirq: exiting task "irq/32-dw_hdmi_" (124) is an active IRQ thread (irq 32) Fixes: eea034af90c6 ("drm/bridge/synopsys: dw-hdmi: don't clobber drvdata") Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Koen Kooi <koen@dominion.thruhere.net> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/1527673438-20643-1-git-send-email-narmstrong@baylibre.com
2018-05-30blk-mq: only iterate over inflight requests in blk_mq_tagset_busy_iterChristoph Hellwig
We already check for started commands in all callbacks, but we should also protect against already completed commands. Do this by taking the checks to common code. Acked-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30nbd: clear DISCONNECT_REQUESTED flag once disconnection occurs.Kevin Vigor
When a userspace client requests a NBD device be disconnected, the DISCONNECT_REQUESTED flag is set. While this flag is set, the driver will not inform userspace when a connection is closed. Unfortunately the flag was never cleared, so once a disconnect was requested the driver would thereafter never tell userspace about a closed connection. Thus when connections failed due to timeout, no attempt to reconnect was made and eventually the device would fail. Fix by clearing the DISCONNECT_REQUESTED flag (and setting the DISCONNECTED flag) once all connections are closed. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Kevin Vigor <kvigor@fb.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-05-30vhost_net: flush batched heads before trying to busy pollingJason Wang
After commit e2b3b35eb989 ("vhost_net: batch used ring update in rx"), we tend to batch updating used heads. But it doesn't flush batched heads before trying to do busy polling, this will cause vhost to wait for guest TX which waits for the used RX. Fixing by flush batched heads before busy loop. 1 byte TCP_RR performance recovers from 13107.83 to 50402.65. Fixes: e2b3b35eb989 ("vhost_net: batch used ring update in rx") Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-30btrfs: Factor out write portion of btrfs_get_blocks_directNikolay Borisov
Now that the read side is extracted into its own function, do the same to the write side. This leaves btrfs_get_blocks_direct_write with the sole purpose of handling common locking required. Also flip the condition in btrfs_get_blocks_direct_write so that the write case comes first and we check for if (Create) rather than if (!create). This is purely subjective but I believe makes reading a bit more "linear". No functional changes. Signed-off-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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