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  1. 20 2月, 2008 1 次提交
    • S
      Add missing init section definitions · 37c514e3
      由 Sam Ravnborg 提交于 
      When adding __devinitconst etc. the __initconst variant
were missed.
Add this one and proper definitions for .head.text for use
in .S files.
The naming .head.text is preferred over .text.head as the
latter will conflict for a function named head when introducing
-ffunctions-sections.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
      37c514e3
  3. 19 2月, 2008 10 次提交
    • J
      libata: eliminate the home grown dma padding in favour of · dde20207
      由 James Bottomley 提交于 
      that provided by the block layer

ATA requires that all DMA transfers begin and end on word boundaries.
Because of this, a large amount of machinery grew up in ide to adjust
scatterlists on this basis.  However, as of 2.5, the block layer has a
dma_alignment variable which ensures both the beginning and length of a
DMA transfer are aligned on the dma_alignment boundary.  Although the
block layer does adjust the beginning of the transfer to ensure this
happens, it doesn't actually adjust the length, it merely makes sure
that space is allocated for transfers beyond the declared length.  The
upshot of this is that scatterlists may be padded to any size between
the actual length and the length adjusted to the dma_alignment safely
knowing that memory is allocated in this region.

Right at the moment, SCSI takes the default dma_aligment which is on a
512 byte boundary.  Note that this aligment only applies to transfers
coming in from user space.  However, since all kernel allocations are
automatically aligned on a minimum of 32 byte boundaries, it is safe to
adjust them in this manner as well.

tj: * Adjusting sg after padding is done in block layer.  Make libata
      set queue alignment correctly for ATAPI devices and drop broken
      sg mangling from ata_sg_setup().
    * Use request->raw_data_len for ATAPI transfer chunk size.
    * Killed qc->raw_nbytes.
    * Separated out killing qc->n_iter.
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      dde20207
    • T
      block: implement request_queue->dma_drain_needed · 2fb98e84
      由 Tejun Heo 提交于 
      Draining shouldn't be done for commands where overflow may indicate
data integrity issues.  Add dma_drain_needed callback to
request_queue.  Drain buffer is appened iff this function returns
non-zero.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      2fb98e84
    • T
      block: add request->raw_data_len · 6b00769f
      由 Tejun Heo 提交于 
      With padding and draining moved into it, block layer now may extend
requests as directed by queue parameters, so now a request has two
sizes - the original request size and the extended size which matches
the size of area pointed to by bios and later by sgs.  The latter size
is what lower layers are primarily interested in when allocating,
filling up DMA tables and setting up the controller.

Both padding and draining extend the data area to accomodate
controller characteristics.  As any controller which speaks SCSI can
handle underflows, feeding larger data area is safe.

So, this patch makes the primary data length field, request->data_len,
indicate the size of full data area and add a separate length field,
request->raw_data_len, for the unmodified request size.  The latter is
used to report to higher layer (userland) and where the original
request size should be fed to the controller or device.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      6b00769f
    • J
      cfq-iosched: add hlist for browsing parallel to the radix tree · ffc4e759
      由 Jens Axboe 提交于 
      It's cumbersome to browse a radix tree from start to finish, especially
since we modify keys when a process exits. So add a hlist for the single
purpose of browsing over all known cfq_io_contexts, used for exit,
io prio change, etc.

This fixes http://bugzilla.kernel.org/show_bug.cgi?id=9948Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      ffc4e759
    • A
      fs/block_dev.c: remove #if 0'ed code · 86b6c7a7
      由 Adrian Bunk 提交于 
      Commit b2e895db #if 0'ed this code stating:

<--  snip  -->

    [PATCH] revert blockdev direct io back to 2.6.19 version

    Andrew Vasquez is reporting as-iosched oopses and a 65% throughput
    slowdown due to the recent special-casing of direct-io against
    blockdevs.  We don't know why either of these things are occurring.

    The patch minimally reverts us back to the 2.6.19 code for a 2.6.20
    release.

<--  snip  -->

It has since been dead code, and unless someone wants to revive it now
it's time to remove it.

This patch also makes bio_release_pages() static again and removes the
ki_bio_count member from struct kiocb, reverting changes that had been
done for this dead code.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NJens Axboe <axboe@carl.home.kernel.dk>
      86b6c7a7
    • A
      make struct def_blk_aops static · 4c54ac62
      由 Adrian Bunk 提交于 
      This patch makes the needlessly global struct def_blk_aops static.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NJens Axboe <axboe@carl.home.kernel.dk>
      4c54ac62
    • R
      net: fix kernel-doc warnings in header files · 31729363
      由 Randy Dunlap 提交于 
      Add missing structure kernel-doc descriptions to sock.h & skbuff.h
to fix kernel-doc warnings.

(I think that Stephen H. sent a similar patch, but I can't find it.
I just want to kill the warnings, with either patch.)
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      31729363
    • D
      [NET]: Elminate spurious print_mac() calls. · 8f789c48
      由 David S. Miller 提交于 
      Patrick McHardy notes that print_mac() can get invoked
even if the result it unused (f.e. as an argument to
pr_debug() when DEBUG is not defined).

Mark this function as "__pure" to eliminate this problem.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      8f789c48
    • B
      linux/hdsmart.h: fix goofups (take 2) · f401fd55
      由 Bartlomiej Zolnierkiewicz 提交于 
      Fix goofups of commit 76166952
("<linux/hdsmart.h> is not used by kernel code").

Also update include/linux/Kbuild to reflect the fact that hdsmart.h
uses __KERNEL__ ifdefs now.
Reported-by: N"Robert P. J. Day" <rpjday@crashcourse.ca>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
      f401fd55
    • A
      via82cxxx: add new PCI id for cx700 · 84f7e451
      由 Andrew Smith 提交于 
      [bart: manually ported it over via82cxxx changes]

From: Andrew Smith <asmith@tranquility.fsbusiness.co.uk>
Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
      84f7e451
  5. 18 2月, 2008 2 次提交
  7. 15 2月, 2008 21 次提交
  9. 14 2月, 2008 6 次提交