Eric Lee / smarc-fsl-linux-kernel

26 Feb, 2010

2 commits

22 Sep, 2009

1 commit

11 May, 2009

2 commits

  • 9934c8c04   block: implement and enforce request peek/start/fetch ... Browse Code »

    Till now block layer allowed two separate modes of request execution.
    A request is always acquired from the request queue via
    elv_next_request(). After that, drivers are free to either dequeue it
    or process it without dequeueing. Dequeue allows elv_next_request()
    to return the next request so that multiple requests can be in flight.

    Executing requests without dequeueing has its merits mostly in
    allowing drivers for simpler devices which can't do sg to deal with
    segments only without considering request boundary. However, the
    benefit this brings is dubious and declining while the cost of the API
    ambiguity is increasing. Segment based drivers are usually for very
    old or limited devices and as converting to dequeueing model isn't
    difficult, it doesn't justify the API overhead it puts on block layer
    and its more modern users.

    Previous patches converted all block low level drivers to dequeueing
    model. This patch completes the API transition by...

    * renaming elv_next_request() to blk_peek_request()

    * renaming blkdev_dequeue_request() to blk_start_request()

    * adding blk_fetch_request() which is combination of peek and start

    * disallowing completion of queued (not started) requests

    * applying new API to all LLDs

    Renamings are for consistency and to break out of tree code so that
    it's apparent that out of tree drivers need updating.

    [ Impact: block request issue API cleanup, no functional change ]

    Signed-off-by: Tejun Heo
    Cc: Rusty Russell
    Cc: James Bottomley
    Cc: Mike Miller
    Cc: unsik Kim
    Cc: Paul Clements
    Cc: Tim Waugh
    Cc: Geert Uytterhoeven
    Cc: David S. Miller
    Cc: Laurent Vivier
    Cc: Jeff Garzik
    Cc: Jeremy Fitzhardinge
    Cc: Grant Likely
    Cc: Adrian McMenamin
    Cc: Stephen Rothwell
    Cc: Bartlomiej Zolnierkiewicz
    Cc: Borislav Petkov
    Cc: Sergei Shtylyov
    Cc: Alex Dubov
    Cc: Pierre Ossman
    Cc: David Woodhouse
    Cc: Markus Lidel
    Cc: Stefan Weinhuber
    Cc: Martin Schwidefsky
    Cc: Pete Zaitcev
    Cc: FUJITA Tomonori
    Signed-off-by: Jens Axboe

    Tejun Heo
     
  • 83096ebf1   block: convert to pos and nr_sectors accessors ... Browse Code »

    With recent cleanups, there is no place where low level driver
    directly manipulates request fields. This means that the 'hard'
    request fields always equal the !hard fields. Convert all
    rq->sectors, nr_sectors and current_nr_sectors references to
    accessors.

    While at it, drop superflous blk_rq_pos() < 0 test in swim.c.

    [ Impact: use pos and nr_sectors accessors ]

    Signed-off-by: Tejun Heo
    Acked-by: Geert Uytterhoeven
    Tested-by: Grant Likely
    Acked-by: Grant Likely
    Tested-by: Adrian McMenamin
    Acked-by: Adrian McMenamin
    Acked-by: Mike Miller
    Cc: James Bottomley
    Cc: Bartlomiej Zolnierkiewicz
    Cc: Borislav Petkov
    Cc: Sergei Shtylyov
    Cc: Eric Moore
    Cc: Alan Stern
    Cc: FUJITA Tomonori
    Cc: Pete Zaitcev
    Cc: Stephen Rothwell
    Cc: Paul Clements
    Cc: Tim Waugh
    Cc: Jeff Garzik
    Cc: Jeremy Fitzhardinge
    Cc: Alex Dubov
    Cc: David Woodhouse
    Cc: Martin Schwidefsky
    Cc: Dario Ballabio
    Cc: David S. Miller
    Cc: Rusty Russell
    Cc: unsik Kim
    Cc: Laurent Vivier
    Signed-off-by: Jens Axboe

    Tejun Heo
     

28 Apr, 2009

1 commit

07 Jan, 2009

1 commit

01 Sep, 2008

1 commit

01 Feb, 2008

1 commit

  • e30f98fca   block/sunvdc.c:print_version() must be __devinit ... Browse Code »

    This patch fixes the following section mismatches:

    ...
    WARNING: drivers/block/sunvdc.o(.text+0xf0): Section mismatch in reference from the function print_version() to the variable .devinit.data:version
    WARNING: drivers/block/sunvdc.o(.text+0xf8): Section mismatch in reference from the function print_version() to the variable .devinit.data:version
    ...

    Signed-off-by: Adrian Bunk
    Signed-off-by: Jens Axboe

    Adrian Bunk
     

28 Jan, 2008

1 commit

  • 5047c3c64   blk_end_request: changing sunvdc (take 4) ... Browse Code »

    This patch converts sunvdc to use blk_end_request interfaces.
    Related 'uptodate' arguments are converted to 'error'.

    As a result, the interface of internal function, vdc_end_request(),
    is changed.

    Cc: David S. Miller
    Signed-off-by: Kiyoshi Ueda
    Signed-off-by: Jun'ichi Nomura
    Signed-off-by: Jens Axboe

    Kiyoshi Ueda
     

24 Oct, 2007

1 commit

23 Oct, 2007

1 commit

27 Aug, 2007

1 commit

  • 1bd4b2803   [SUNVDC]: Use slice 0xff on VD_DISK_TYPE_DISK. ... Browse Code »

    While debugging issues with the VDS server I made the
    driver use partition 2 to get at the whole disk since
    this is the "whole disk" partition in the Sun disk
    label.

    We really should use slice 0xff which really means
    the whole physical disk in the VIO disk protocol.
    Otherwise things won't work well on a disk image
    that doesn't have a proper disk label on it.

    Signed-off-by: David S. Miller

    David S. Miller
     

24 Jul, 2007

1 commit

  • 165125e1e   [BLOCK] Get rid of request_queue_t typedef ... Browse Code »

    Some of the code has been gradually transitioned to using the proper
    struct request_queue, but there's lots left. So do a full sweet of
    the kernel and get rid of this typedef and replace its uses with
    the proper type.

    Signed-off-by: Jens Axboe

    Jens Axboe
     

20 Jul, 2007

2 commits

18 Jul, 2007

1 commit

16 Jul, 2007

2 commits

  • 43fdf2747   [SPARC64]: Abstract out mdesc accesses for better MD update handling. ... Browse Code »

    Since we have to be able to handle MD updates, having an in-tree
    set of data structures representing the MD objects actually makes
    things more painful.

    The MD itself is easy to parse, and we can implement the existing
    interfaces using direct parsing of the MD binary image.

    The MD is now reference counted, so accesses have to now take the
    form:

    handle = mdesc_grab();

    ... operations on MD ...

    mdesc_release(handle);

    The only remaining issue are cases where code holds on to references
    to MD property values. mdesc_get_property() returns a direct pointer
    to the property value, most cases just pull in the information they
    need and discard the pointer, but there are few that use the pointer
    directly over a long lifetime. Those will be fixed up in a subsequent
    changeset.

    A preliminary handler for MD update events from domain services is
    there, it is rudimentry but it works and handles all of the reference
    counting. It does not check the generation number of the MDs,
    and it does not generate a "add/delete" list for notification to
    interesting parties about MD changes but that will be forthcoming.

    Signed-off-by: David S. Miller

    David S. Miller
     
  • 667ef3c39   [SPARC64]: Add Sun LDOM virtual disk driver. ... Browse Code »

    Signed-off-by: David S. Miller

    David S. Miller