1. 14 Jun, 2018 3 commits
    • James Smart's avatar
      nvme-fc: fix nulling of queue data on reconnect · 3e493c00
      James Smart authored
      The reconnect path is calling the init routines to clear a queue
      structure. But the queue structure has state that perhaps needs
      to persist as long as the controller is live.
      
      Remove the nvme_fc_init_queue() calls on reconnect.
      The nvme_fc_free_queue() calls will clear state bits and reset
      any relevant queue state for a new connection.
      Signed-off-by: default avatarJames Smart <james.smart@broadcom.com>
      Reviewed-by: default avatarHannes Reinecke <hare@suse.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      3e493c00
    • James Smart's avatar
      nvme-fc: remove reinit_request routine · 587331f7
      James Smart authored
      The reinit_request routine is not necessary. Remove support for the
      op callback.
      
      As all that nvme_reinit_tagset() does is itterate and call the
      reinit routine, it too has no purpose. Remove the call.
      Signed-off-by: default avatarJames Smart <james.smart@broadcom.com>
      Reviewed-by: default avatarHannes Reinecke <hare@suse.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      587331f7
    • James Smart's avatar
      nvme-fc: change controllers first connect to use reconnect path · 4c984154
      James Smart authored
      Current code follows the framework that has been in the transports
      from the beginning where initial link-side controller connect occurs
      as part of "creating the controller". Thus that first connect fully
      talks to the controller and obtains values that can then be used in
      for blk-mq setup, etc. It also means that everything about the
      controller is fully know before the "create controller" call returns.
      
      This has several weaknesses:
      - The initial create_ctrl call made by the cli will block for a long
        time as wire transactions are performed synchronously. This delay
        becomes longer if errors occur or connectivity is lost and retries
        need to be performed.
      - Code wise, it means there is a separate connect path for initial
        controller connect vs the (same) steps used in the reconnect path.
      - And as there's separate paths, it means there's separate error
        handling and retry logic. It also plays havoc with the NEW state
        (should transition out of it after successful initial connect) vs
        the RESETTING and CONNECTING (reconnect) states that want to be
        transitioned to on error.
      - As there's separate paths, to recover from errors and disruptions,
        it requires separate recovery/retry paths as well and can severely
        convolute the controller state.
      
      This patch reworks the fc transport to use the same connect paths
      for the initial connection as it uses for reconnect. This makes a
      single path for error recovery and handling.
      
      This patch:
      - Removes the driving of the initial connect and replaces it with
        a state transition to CONNECTING and initiating the reconnect
        thread. A dummy state transition of RESETTING had to be traversed
        as a direct transtion of NEW->CONNECTING is not allowed. Given
        that the controller is "new", the RESETTING transition is a simple
        no-op. Once in the reconnecting thread, the normal behaviors of
        ctrl_loss_tmo (max_retries * connect_delay) and dev_loss_tmo will
        apply before the controller is torn down.
      - Only if the state transitions couldn't be traversed and the
        reconnect thread not scheduled, will the controller be torn down
        while in create_ctrl.
      - The prior code used the controller state of NEW to indicate
        whether request queues had been initialized or not. For the admin
        queue, the request queue is always created, so there's no need to
        check a state. For IO queues, change to tracking whether a successful
        io request queue create has occurred (e.g. 1st successful connect).
      - The initial controller id is initialized to the dynamic controller
        id used in the initial connect message. It will be overwritten by
        the real controller id once the controller is connected on the wire.
      Signed-off-by: default avatarJames Smart <james.smart@broadcom.com>
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      4c984154
  2. 13 Jun, 2018 1 commit
  3. 11 Jun, 2018 4 commits
  4. 09 Jun, 2018 1 commit
  5. 08 Jun, 2018 14 commits
  6. 07 Jun, 2018 1 commit
  7. 06 Jun, 2018 1 commit
  8. 05 Jun, 2018 7 commits
  9. 04 Jun, 2018 6 commits
    • Jianchao Wang's avatar
      blk-mq: return when hctx is stopped in blk_mq_run_work_fn · 0196d6b4
      Jianchao Wang authored
      If a hardware queue is stopped, it should not be run again before
      explicitly started. Ignore stopped queues in blk_mq_run_work_fn(),
      fixing a regression recently introduced when the START_ON_RUN bit
      was removed.
      
      Fixes: 15fe8a90 ("blk-mq: remove blk_mq_delay_queue()")
      Reviewed-by: default avatarMing Lei <ming.lei@redhat.com>
      Reviewed-by: default avatarBart Van Assche <bart.vanassche@wdc.com>
      Signed-off-by: default avatarJianchao Wang <jianchao.w.wang@oracle.com>
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      0196d6b4
    • Linus Torvalds's avatar
      Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · f956d08a
      Linus Torvalds authored
      Pull misc vfs updates from Al Viro:
       "Misc bits and pieces not fitting into anything more specific"
      
      * 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        vfs: delete unnecessary assignment in vfs_listxattr
        Documentation: filesystems: update filesystem locking documentation
        vfs: namei: use path_equal() in follow_dotdot()
        fs.h: fix outdated comment about file flags
        __inode_security_revalidate() never gets NULL opt_dentry
        make xattr_getsecurity() static
        vfat: simplify checks in vfat_lookup()
        get rid of dead code in d_find_alias()
        it's SB_BORN, not MS_BORN...
        msdos_rmdir(): kill BS comment
        remove rpc_rmdir()
        fs: avoid fdput() after failed fdget() in vfs_dedupe_file_range()
      f956d08a
    • Linus Torvalds's avatar
      Merge branch 'hch.procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · cf626b0d
      Linus Torvalds authored
      Pull procfs updates from Al Viro:
       "Christoph's proc_create_... cleanups series"
      
      * 'hch.procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (44 commits)
        xfs, proc: hide unused xfs procfs helpers
        isdn/gigaset: add back gigaset_procinfo assignment
        proc: update SIZEOF_PDE_INLINE_NAME for the new pde fields
        tty: replace ->proc_fops with ->proc_show
        ide: replace ->proc_fops with ->proc_show
        ide: remove ide_driver_proc_write
        isdn: replace ->proc_fops with ->proc_show
        atm: switch to proc_create_seq_private
        atm: simplify procfs code
        bluetooth: switch to proc_create_seq_data
        netfilter/x_tables: switch to proc_create_seq_private
        netfilter/xt_hashlimit: switch to proc_create_{seq,single}_data
        neigh: switch to proc_create_seq_data
        hostap: switch to proc_create_{seq,single}_data
        bonding: switch to proc_create_seq_data
        rtc/proc: switch to proc_create_single_data
        drbd: switch to proc_create_single
        resource: switch to proc_create_seq_data
        staging/rtl8192u: simplify procfs code
        jfs: simplify procfs code
        ...
      cf626b0d
    • Linus Torvalds's avatar
      Merge branch 'work.rmdir' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 9c50eafc
      Linus Torvalds authored
      Pull rmdir update from Al Viro:
       "More shrink_dcache_parent()-related stuff - killing the main source of
        potentially contended calls of that on large subtrees"
      
      * 'work.rmdir' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        rmdir(),rename(): do shrink_dcache_parent() only on success
      9c50eafc
    • Linus Torvalds's avatar
      Merge branch 'work.dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · 06c86e66
      Linus Torvalds authored
      Pull dcache updates from Al Viro:
       "This is the first part of dealing with livelocks etc around
        shrink_dcache_parent()."
      
      * 'work.dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        restore cond_resched() in shrink_dcache_parent()
        dput(): turn into explicit while() loop
        dcache: move cond_resched() into the end of __dentry_kill()
        d_walk(): kill 'finish' callback
        d_invalidate(): unhash immediately
      06c86e66
    • Linus Torvalds's avatar
      Merge tag 'for-4.18/block-20180603' of git://git.kernel.dk/linux-block · f459c345
      Linus Torvalds authored
      Pull block updates from Jens Axboe:
      
       - clean up how we pass around gfp_t and
         blk_mq_req_flags_t (Christoph)
      
       - prepare us to defer scheduler attach (Christoph)
      
       - clean up drivers handling of bounce buffers (Christoph)
      
       - fix timeout handling corner cases (Christoph/Bart/Keith)
      
       - bcache fixes (Coly)
      
       - prep work for bcachefs and some block layer optimizations (Kent).
      
       - convert users of bio_sets to using embedded structs (Kent).
      
       - fixes for the BFQ io scheduler (Paolo/Davide/Filippo)
      
       - lightnvm fixes and improvements (Matias, with contributions from Hans
         and Javier)
      
       - adding discard throttling to blk-wbt (me)
      
       - sbitmap blk-mq-tag handling (me/Omar/Ming).
      
       - remove the sparc jsflash block driver, acked by DaveM.
      
       - Kyber scheduler improvement from Jianchao, making it more friendly
         wrt merging.
      
       - conversion of symbolic proc permissions to octal, from Joe Perches.
         Previously the block parts were a mix of both.
      
       - nbd fixes (Josef and Kevin Vigor)
      
       - unify how we handle the various kinds of timestamps that the block
         core and utility code uses (Omar)
      
       - three NVMe pull requests from Keith and Christoph, bringing AEN to
         feature completeness, file backed namespaces, cq/sq lock split, and
         various fixes
      
       - various little fixes and improvements all over the map
      
      * tag 'for-4.18/block-20180603' of git://git.kernel.dk/linux-block: (196 commits)
        blk-mq: update nr_requests when switching to 'none' scheduler
        block: don't use blocking queue entered for recursive bio submits
        dm-crypt: fix warning in shutdown path
        lightnvm: pblk: take bitmap alloc. out of critical section
        lightnvm: pblk: kick writer on new flush points
        lightnvm: pblk: only try to recover lines with written smeta
        lightnvm: pblk: remove unnecessary bio_get/put
        lightnvm: pblk: add possibility to set write buffer size manually
        lightnvm: fix partial read error path
        lightnvm: proper error handling for pblk_bio_add_pages
        lightnvm: pblk: fix smeta write error path
        lightnvm: pblk: garbage collect lines with failed writes
        lightnvm: pblk: rework write error recovery path
        lightnvm: pblk: remove dead function
        lightnvm: pass flag on graceful teardown to targets
        lightnvm: pblk: check for chunk size before allocating it
        lightnvm: pblk: remove unnecessary argument
        lightnvm: pblk: remove unnecessary indirection
        lightnvm: pblk: return NVM_ error on failed submission
        lightnvm: pblk: warn in case of corrupted write buffer
        ...
      f459c345
  10. 03 Jun, 2018 2 commits