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  1. 18 8月, 2017 15 次提交
  3. 28 6月, 2017 1 次提交
  5. 09 6月, 2017 1 次提交
    • C
      block: introduce new block status code type · 2a842aca
      由 Christoph Hellwig 提交于 
      Currently we use nornal Linux errno values in the block layer, and while
we accept any error a few have overloaded magic meanings.  This patch
instead introduces a new  blk_status_t value that holds block layer specific
status codes and explicitly explains their meaning.  Helpers to convert from
and to the previous special meanings are provided for now, but I suspect
we want to get rid of them in the long run - those drivers that have a
errno input (e.g. networking) usually get errnos that don't know about
the special block layer overloads, and similarly returning them to userspace
will usually return somethings that strictly speaking isn't correct
for file system operations, but that's left as an exercise for later.

For now the set of errors is a very limited set that closely corresponds
to the previous overloaded errno values, but there is some low hanging
fruite to improve it.

blk_status_t (ab)uses the sparse __bitwise annotations to allow for sparse
typechecking, so that we can easily catch places passing the wrong values.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NJens Axboe <axboe@fb.com>
      2a842aca
  7. 01 2月, 2017 1 次提交
  9. 18 11月, 2016 1 次提交
  11. 10 11月, 2016 2 次提交
    • A
      skd: fix function prototype · 41c9499b
      由 Arnd Bergmann 提交于 
      Building with W=1 shows a harmless warning for the skd driver:

drivers/block/skd_main.c:2959:1: error: ‘static’ is not at beginning of declaration [-Werror=old-style-declaration]

This changes the prototype to the expected formatting.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NJens Axboe <axboe@fb.com>
      41c9499b
    • A
      skd: fix msix error handling · 3bc8492f
      由 Arnd Bergmann 提交于 
      As reported by gcc -Wmaybe-uninitialized, the cleanup path for
skd_acquire_msix tries to free the already allocated msi-x vectors
in reverse order, but the index variable may not have been
used yet:

drivers/block/skd_main.c: In function ‘skd_acquire_irq’:
drivers/block/skd_main.c:3890:8: error: ‘i’ may be used uninitialized in this function [-Werror=maybe-uninitialized]

This changes the failure path to skip releasing the interrupts
if we have not started requesting them yet.

Fixes: 180b0ae7 ("skd: use pci_alloc_irq_vectors")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NJens Axboe <axboe@fb.com>
      3bc8492f
  13. 08 11月, 2016 2 次提交
  15. 28 6月, 2016 1 次提交
    • D
      block: convert to device_add_disk() · 0d52c756
      由 Dan Williams 提交于 
      For block drivers that specify a parent device, convert them to use
device_add_disk().

This conversion was done with the following semantic patch:

    @@
    struct gendisk *disk;
    expression E;
    @@

    - disk->driverfs_dev = E;
    ...
    - add_disk(disk);
    + device_add_disk(E, disk);

    @@
    struct gendisk *disk;
    expression E1, E2;
    @@

    - disk->driverfs_dev = E1;
    ...
    E2 = disk;
    ...
    - add_disk(E2);
    + device_add_disk(E1, E2);

...plus some manual fixups for a few missed conversions.

Cc: Jens Axboe <axboe@fb.com>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>
      0d52c756
  17. 08 6月, 2016 1 次提交
  19. 26 4月, 2016 1 次提交
    • J
      skd: remove broken discard support · 49bdedb3
      由 Jeff Moyer 提交于 
      Simply creating a file system on an skd device, followed by mount and
fstrim will result in errors in the logs and then a BUG().  Let's remove
discard support from that driver.  As far as I can tell, it hasn't
worked right since it was merged.  This patch also has a side-effect of
cleaning up an unintentional shadowed declaration inside of
skd_end_request.

I tested to ensure that I can still do I/O to the device using xfstests
./check -g quick.  I didn't do anything more extensive than that,
though.
Signed-off-by: NJeff Moyer <jmoyer@redhat.com>
Signed-off-by: NJens Axboe <axboe@fb.com>
      49bdedb3
  21. 13 4月, 2016 2 次提交
  23. 17 7月, 2015 1 次提交
  25. 05 10月, 2014 1 次提交
    • M
      block: disable entropy contributions for nonrot devices · b277da0a
      由 Mike Snitzer 提交于 
      Clear QUEUE_FLAG_ADD_RANDOM in all block drivers that set
QUEUE_FLAG_NONROT.

Historically, all block devices have automatically made entropy
contributions.  But as previously stated in commit e2e1a148 ("block: add
sysfs knob for turning off disk entropy contributions"):
    - On SSD disks, the completion times aren't as random as they
      are for rotational drives. So it's questionable whether they
      should contribute to the random pool in the first place.
    - Calling add_disk_randomness() has a lot of overhead.

There are more reliable sources for randomness than non-rotational block
devices.  From a security perspective it is better to err on the side of
caution than to allow entropy contributions from unreliable "random"
sources.
Signed-off-by: NMike Snitzer <snitzer@redhat.com>
Signed-off-by: NJens Axboe <axboe@fb.com>
      b277da0a
  27. 13 8月, 2014 1 次提交
  29. 09 8月, 2014 1 次提交
  31. 22 4月, 2014 1 次提交
  33. 17 4月, 2014 1 次提交
  35. 16 4月, 2014 1 次提交
    • J
      block: remove struct request buffer member · b4f42e28
      由 Jens Axboe 提交于 
      This was used in the olden days, back when onions were proper
yellow. Basically it mapped to the current buffer to be
transferred. With highmem being added more than a decade ago,
most drivers map pages out of a bio, and rq->buffer isn't
pointing at anything valid.

Convert old style drivers to just use bio_data().

For the discard payload use case, just reference the page
in the bio.
Signed-off-by: NJens Axboe <axboe@fb.com>
      b4f42e28
  37. 22 2月, 2014 4 次提交
  39. 19 12月, 2013 1 次提交