05 Nov, 2011
1 commit
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Remove 'as' for as is no longer supported, and we can not use
'elevator=as' any more.Signed-off-by: Wang Sheng-Hui
Signed-off-by: Randy Dunlap
Cc: Jens Axboe
Signed-off-by: Linus Torvalds
28 Sep, 2011
1 commit
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There are numerous broken references to Documentation files (in other
Documentation files, in comments, etc.). These broken references are
caused by typo's in the references, and by renames or removals of the
Documentation files. Some broken references are simply odd.Fix these broken references, sometimes by dropping the irrelevant text
they were part of.Signed-off-by: Paul Bolle
Signed-off-by: Jiri Kosina
05 Aug, 2011
1 commit
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There are always questions about why CFQ is idling on various conditions.
Recent ones is Christoph asking again why to idle on REQ_NOIDLE. His
assertion is that XFS is relying more and more on workqueues and is
concerned that CFQ idling on IO from every workqueue will impact
XFS badly.So he suggested that I add some more documentation about CFQ idling
and that can provide more clarity on the topic and also gives an
opprotunity to poke a hole in theory and lead to improvements.So here is my attempt at that. Any comments are welcome.
Signed-off-by: Vivek Goyal
Signed-off-by: Jens Axboe
24 Jul, 2011
1 commit
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Some systems benefit from completions always being steered to the strict
requester cpu rather than the looser "per-socket" steering that
blk_cpu_to_group() attempts by default. This is because the first
CPU in the group mask ends up being completely overloaded with work,
while the others (including the original submitter) has power left
to spare.Allow the strict mode to be set by writing '2' to the sysfs control
file. This is identical to the scheme used for the nomerges file,
where '2' is a more aggressive setting than just being turned on.echo 2 > /sys/block//queue/rq_affinity
Cc: Christoph Hellwig
Cc: Roland Dreier
Tested-by: Dave Jiang
Signed-off-by: Dan Williams
Signed-off-by: Jens Axboe
31 Mar, 2011
1 commit
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi
10 Mar, 2011
1 commit
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Code has been converted over to the new explicit on-stack plugging,
and delay users have been converted to use the new API for that.
So lets kill off the old plugging along with aops->sync_page().Signed-off-by: Jens Axboe
11 Nov, 2010
1 commit
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Remove anticipatory block I/O scheduler info from Documentation/
since the code has been deleted.Signed-off-by: Randy Dunlap
Reported-by: "Robert P. J. Day"
Cc: Jens Axboe
Signed-off-by: Jens Axboe
19 Oct, 2010
1 commit
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Conflicts:
block/blk-core.c
drivers/block/loop.c
mm/swapfile.cSigned-off-by: Jens Axboe
10 Sep, 2010
1 commit
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Signed-off-by: Christoph Hellwig
Signed-off-by: Tejun Heo
Signed-off-by: Jens Axboe
23 Aug, 2010
1 commit
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Some documentation to provide help with tunables.
Signed-off-by: Vivek Goyal
Acked-by: Jeff Moyer
Signed-off-by: Jens Axboe
05 Aug, 2010
1 commit
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Signed-off-by: Nick Piggin
Signed-off-by: Linus Torvalds
08 Mar, 2010
1 commit
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- It looks incorrect to use blk_rq_map_sg with pci_map_page here about
DMA mappings. dma_map_sg?- better to use dma_map_page instead of pci_map_page.
http://marc.info/?l=linux-kernel&m=126596737604808&w=2Signed-off-by: FUJITA Tomonori
Signed-off-by: Jens Axboe
22 Feb, 2010
1 commit
29 Jan, 2010
1 commit
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Updated 'nomerges' tunable to accept a value of '2' - indicating that _no_
merges at all are to be attempted (not even the simple one-hit cache).The following table illustrates the additional benefit - 5 minute runs of
a random I/O load were applied to a dozen devices on a 16-way x86_64 system.nomerges Throughput %System Improvement (tput / %sys)
-------- ------------ ----------- -------------------------
0 12.45 MB/sec 0.669365609
1 12.50 MB/sec 0.641519199 0.40% / 2.71%
2 12.52 MB/sec 0.639849750 0.56% / 2.96%Signed-off-by: Alan D. Brunelle
Signed-off-by: Jens Axboe
03 Jan, 2010
1 commit
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It seems that Documentation/DMA-mapping.txt was supposed to be renamed
to Documentation/PCI/PCI-DMA-mapping.txt.Signed-off-by: Kusanagi Kouichi
Signed-off-by: Randy Dunlap
Signed-off-by: Linus Torvalds
18 Dec, 2009
1 commit
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Commit 492af6350a5ccf087e4964104a276ed358811458 removed
the AS IO scheduler, so remove its documentation too.Signed-off-by: FUJITA Tomonori
Signed-off-by: Jens Axboe
01 Jul, 2009
1 commit
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Signed-off-by: Andre Noll
Acked-by: Martin K. Petersen
Signed-off-by: Jens Axboe
13 Jun, 2009
1 commit
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Fix various typos in documentation txts.
Signed-off-by: Matt LaPlante
Signed-off-by: Jiri Kosina
02 Jun, 2009
1 commit
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File Documentation/PCI/PCI-DMA-mapping.txt does not exist.
Documentation/DMA-mapping.txt contains DMA Mapping detailsSigned-off-by: vibi sreenivasan
Signed-off-by: Jens Axboe
15 Apr, 2009
1 commit
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We do per-device plugging, get rid of any references to tq_disk as that
has been dead since 2.6.5 or so.Signed-off-by: Jens Axboe
26 Mar, 2009
1 commit
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These lines appear in this file twice - removed one occurrence.
Signed-off-by: Avishay Traeger
Signed-off-by: Jens Axboe
02 Feb, 2009
1 commit
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Signed-off-by: Jens Axboe
30 Jan, 2009
2 commits
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biodoc.txt mentions that elevator functions marked with * are mandatory, but
no function is marked with *. Mark the 3 functions which should be
implemented by any io scheduler.Signed-off-by: Nikanth Karthikesan
Signed-off-by: Jens Axboe -
Move DMA-mapping.txt to Documentation/PCI/.
DMA-mapping.txt was supposed to be moved from Documentation/ to
Documentation/PCI/. The 00-INDEX files in those two directories
were updated, along with a few other text files, but the file
itself somehow escaped being moved, so move it and update more
text files and source files with its new location.Signed-off-by: Randy Dunlap
Acked-by: Greg Kroah-Hartman
cc: Jesse Barnes
Signed-off-by: Linus Torvalds
29 Dec, 2008
1 commit
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The drivers/block/ll_rw_block.c has been split and organized in the block/
directory, and also drivers/block/elevator.c has been moved to the block/
directory. Update Documentation/block/biodoc.txt accordinglySigned-off-by: Nikanth Karthikesan
Signed-off-by: Jens Axboe
17 Oct, 2008
2 commits
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* 'docs' of git://git.lwn.net/linux-2.6:
Document panic_on_unrecovered_nmi sysctl
Add a reference to paper to SubmittingPatches
Add kerneldoc documentation for new printk format extensions
Remove videobook.tmpl
doc: Test-by?
Add the development process document
Documentation/block/data-integrity.txt: Fix section numbers -
Signed-off-by: Alberto Bertogli
Signed-off-by: Jonathan Corbet
09 Oct, 2008
1 commit
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Update the description of fifo_batch to match the current implementation,
and include a description of how to tune it.Signed-off-by: Aaron Carroll
Signed-off-by: Jens Axboe
03 Jul, 2008
1 commit
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Signed-off-by: Martin K. Petersen
Signed-off-by: Jens Axboe
22 Apr, 2008
1 commit
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Signed-off-by: Robert P. J. Day
Signed-off-by: Jesper Juhl
16 Oct, 2007
3 commits
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Add Documentation/block/00-INDEX
Signed-off-by: Rob Landley
Signed-off-by: Jens Axboe -
as-iosched.txt:
o Changed IO scheduler selection text to a reference to the
switching-sched.txt file.o Fixed typo: 'for up time...' -> 'for up to...'
o Added short description of the est_time file.
deadline-iosched.txt:
o Changed IO scheduler selection text to a reference to the
switching-sched.txt file.o Removed references to non-existent seek-cost and stream_unit.
o Fixed typo: 'write_starved' -> 'writes_starved'
switching-sched.txt:
o Added in boot-time argument to set the default IO scheduler. (From
as-iosched.txt)o Added in sysfs mount instructions. (From deadline-iosched.txt)
Signed-off-by: Alan D. Brunelle
Signed-off-by: Jens Axboe -
Jens Axboe's old email address bounces.
Signed-off-by: Rob Landley
Signed-off-by: Jens Axboe
10 Oct, 2007
2 commits
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The newer glibc does not allow system calls to be made via _syscallN()
wrapper. They have to be made through syscall(). The ionice code used
the older interface. Correcting it to use syscall.Signed-off-by: Dhaval Giani
Signed-off-by: Jens Axboe -
Every usage of rq_for_each_bio wraps a usage of
bio_for_each_segment, so these can be combined into
rq_for_each_segment.We define "struct req_iterator" to hold the 'bio' and 'index' that
are needed for the double iteration.Signed-off-by: Neil Brown
Various compile fixes by me...
Signed-off-by: Jens Axboe
24 Jul, 2007
1 commit
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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
10 Jul, 2007
1 commit
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…_ordered() no longer has a gfp_mask parameter - blk_queue_ordered_locked() no longer exists - sd_prepare_flush() looks slightly different
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
24 May, 2007
1 commit
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Allow user space to determine if a disk supports Asynchronous Notification of
media changes. This is done by adding a new sysfs file "capability_flags",
which is documented in (insert file name). This sysfs file will export all
disk capabilities flags to user space. We also define a new flag to define
the media change notification capability.Signed-off-by: Kristen Carlson Accardi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
09 May, 2007
1 commit
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Fix various typos in kernel docs and Kconfigs, 2.6.21-rc4.
Signed-off-by: Matt LaPlante
Signed-off-by: Adrian Bunk
20 Dec, 2006
1 commit
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Signed-off-by: Jens Axboe