02 Nov, 2017
1 commit
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Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.By default all files without license information are under the default
license of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if
Reviewed-by: Philippe Ombredanne
Reviewed-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman
18 Aug, 2017
1 commit
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This patch does not change any functionality.
Signed-off-by: Bart Van Assche
Acked-by: David S. Miller
Reviewed-by: Hannes Reinecke
Cc: linux-ide@vger.kernel.org
Signed-off-by: Jens Axboe
09 Jun, 2017
1 commit
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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: Christoph Hellwig
Signed-off-by: Jens Axboe
21 Apr, 2017
1 commit
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This passes on the scsi_cmnd result field to users of passthrough
requests. Currently we abuse req->errors for this purpose, but that
field will go away in its current form.Note that the old IDE code abuses the errors field in very creative
ways and stores all kinds of different values in it. I didn't dare
to touch this magic, so the abuses are brought forward 1:1.Signed-off-by: Christoph Hellwig
Reviewed-by: Martin K. Petersen
Reviewed-by: Bart Van Assche
Signed-off-by: Jens Axboe
01 Feb, 2017
2 commits
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Instead of keeping two levels of indirection for requests types, fold it
all into the operations. The little caveat here is that previously
cmd_type only applied to struct request, while the request and bio op
fields were set to plain REQ_OP_READ/WRITE even for passthrough
operations.Instead this patch adds new REQ_OP_* for SCSI passthrough and driver
private requests, althought it has to add two for each so that we
can communicate the data in/out nature of the request.Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe -
Currently the legacy ide driver defines several request types of it's own,
which is in the way of removing that field entirely.Instead add a type field to struct ide_request and use that to distinguish
the different types of IDE-internal requests.It's a bit of a mess, but so is the surrounding code..
Signed-off-by: Christoph Hellwig
Acked-by: David S. Miller
Signed-off-by: Jens Axboe
28 Jan, 2017
1 commit
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And require all drivers that want to support BLOCK_PC to allocate it
as the first thing of their private data. To support this the legacy
IDE and BSG code is switched to set cmd_size on their queues to let
the block layer allocate the additional space.Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe
08 Jun, 2016
1 commit
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The req operation REQ_OP is separated from the rq_flag_bits
definition. This converts the block layer drivers to
use req_op to get the op from the request struct.Signed-off-by: Mike Christie
Reviewed-by: Hannes Reinecke
Signed-off-by: Jens Axboe
06 May, 2015
2 commits
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Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe -
Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe
13 Dec, 2014
1 commit
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The string "IOMEGA Clik!" has length 12, not 11. Using strstarts
avoids the error-prone hardcoding of the prefix length. For
consistency, also change the occurence just above.Signed-off-by: Rasmus Villemoes
Signed-off-by: David S. Miller
09 Nov, 2011
1 commit
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The top of has this comment:
* Please do not include this file in generic code. There is currently
* no requirement for any architecture to implement anything held
* within this file.
*
* Thanks. --rmkRemove inclusion of , to prevent the following compile error
from happening soon:| include/linux/irq.h:132: error: redefinition of ‘struct irq_data’
| include/linux/irq.h:286: error: redefinition of ‘struct irq_chip’Signed-off-by: Geert Uytterhoeven
Acked-by: Thomas Gleixner
Acked-by: Borislav Petkov
Cc: linux-ide@vger.kernel.org
23 May, 2011
1 commit
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6:
ide/ide-scan-pci.c: Use for_each_pci_dev().
ide: Use linux/mutex.h
IDE: ide-floppy, remove unnecessary NULL check
drivers/ide/pmac.c: Remove unnecessary casts of pci_get_drvdata
ide: fix use after free in ide-acpi
31 Mar, 2011
1 commit
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi
23 Nov, 2010
1 commit
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Stanse found that rq in ide_floppy_callback cannot be NULL, because it
is dereferenced all around. So remove the superfluous check.This appeared after blk_* macros removal.
Signed-off-by: Jiri Slaby
Signed-off-by: David S. Miller
08 Aug, 2010
2 commits
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Remove the current bio flags and reuse the request flags for the bio, too.
This allows to more easily trace the type of I/O from the filesystem
down to the block driver. There were two flags in the bio that were
missing in the requests: BIO_RW_UNPLUG and BIO_RW_AHEAD. Also I've
renamed two request flags that had a superflous RW in them.Note that the flags are in bio.h despite having the REQ_ name - as
blkdev.h includes bio.h that is the only way to go for now.Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe -
Remove all the trivial wrappers for the cmd_type and cmd_flags fields in
struct requests. This allows much easier grepping for different request
types instead of unwinding through macros.Signed-off-by: Christoph Hellwig
Signed-off-by: Jens Axboe
30 Mar, 2010
1 commit
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…it slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
26 Feb, 2010
1 commit
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The block layer calling convention is blk_queue_.
blk_queue_max_sectors predates this practice, leading to some confusion.
Rename the function to appropriately reflect that its intended use is to
set max_hw_sectors.Also introduce a temporary wrapper for backwards compability. This can
be removed after the merge window is closed.Signed-off-by: Martin K. Petersen
Signed-off-by: Jens Axboe
26 Jun, 2009
1 commit
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* Use blk_rq_bytes() instead of obsolete ide_rq_bytes() in ide_kill_rq()
and ide_floppy_do_request() for failed requests.
[ bugfix part ]* Use blk_rq_bytes() instead of obsolete ide_rq_bytes() in ide_do_devset()
and ide_complete_drive_reset(). Then remove ide_rq_bytes().
[ cleanup part ]Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: David S. Miller
16 Jun, 2009
1 commit
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Unsupported requests should be never handed down to device drivers
and the best thing we can do upon discovering such request inside
driver's ->do_request method is to just BUG().Signed-off-by: Bartlomiej Zolnierkiewicz
15 May, 2009
6 commits
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Now after all users of pc->buf have been converted, remove the 64B buffer
embedded in each packet command.There should be no functional change resulting from this patch.
Signed-off-by: Borislav Petkov
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Access the sense buffer through the bio in ->pc_callback method thus
alleviating the need for the pc->buf pointer.There should be no functional change resulting from this patch.
Signed-off-by: Borislav Petkov
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There should be no functional change resulting from this patch.
Signed-off-by: Borislav Petkov
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This is in preparation of removing ide_atapi_pc. Expose the buffer as an
argument to ide_queue_pc_tail with later replacing it with local buffer
or even kmalloc'ed one if needed due to stack usage constraints.Also, add the possibility of passing a NULL-ptr buffer for cmds which
don't transfer data besides the cdb. While at it, switch to local buffer
in idetape_get_mode_sense_results().There should be no functional change resulting from this patch.
Signed-off-by: Borislav Petkov
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This is in preparation for removing ide_atapi_pc.
There should be no functional change resulting from this patch.
Signed-off-by: Borislav Petkov
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After the recent struct request cleanups, blk_rq_bytes() is guaranteed
to be valid and is the current total length of the rq's bio. Use that
instead of pc->req_xfer in the do_request() path after the command has
been queuedThe remaining usage of pc->req_xfer now is only until we map the rq to a
bio.While at it:
- remove local caching of rq completion length in ide_tape_issue_pc()
Signed-off-by: Borislav Petkov
11 May, 2009
2 commits
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With recent unification of fields, it's now guaranteed that
rq->data_len always equals blk_rq_bytes(). Convert all direct users
to accessors.[ Impact: convert direct rq->data_len usages to blk_rq_bytes() ]
Signed-off-by: Tejun Heo
Acked-by: Bartlomiej Zolnierkiewicz
Cc: Borislav Petkov
Cc: Sergei Shtylyov
Signed-off-by: Jens Axboe -
ide doesn't manipulate request fields anymore and thus all hard and
their soft equivalents are always equal. Convert all references to
accessors.[ Impact: use pos and nr_sectors accessors ]
Signed-off-by: Tejun Heo
Acked-by: Bartlomiej Zolnierkiewicz
Cc: Borislav Petkov
Cc: Sergei Shtylyov
Signed-off-by: Jens Axboe
28 Apr, 2009
5 commits
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Impact: allow residual count implementation in ->pc_callback()
rq->data_len has two duties - carrying the number of input bytes on
issue and carrying residual count back to the issuer on completion.
ide-atapi completion callback ->pc_callback() is the right place to do
this but currently ide-atapi depends on rq->data_len carrying the
original request size after calling ->pc_callback() to complete the pc
request.This patch makes ide_pc_intr(), ide_tape_issue_pc() and
ide_floppy_issue_pc() cache length to complete before calling
->pc_callback() so that it can modify rq->data_len as necessary.Note: As using rq->data_len for two purposes can make cases like this
incorrect in subtle ways, future changes will introduce separate
field for residual count.Signed-off-by: Tejun Heo
Cc: Jens Axboe -
Impact: fix infinite retry loop
After a command failed, ide-tape and floppy inserts REQUEST_SENSE in
front of the failed command and according to the result, sets
pc->retries, flags and errors. After REQUEST_SENSE is complete, the
failed command is again at the front of the queue and if the verdict
was to terminate the request, the issue functions tries to complete it
directly by calling drive->pc_callback() and returning ide_stopped.However, drive->pc_callback() doesn't complete a request. It only
prepares for completion of the request. As a result, this creates an
infinite loop where the failed request is retried perpetually.Fix it by actually ending the request by calling ide_complete_rq().
Signed-off-by: Tejun Heo
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Since we're issuing REQ_TYPE_SENSE now we need to allow those types of
rqs in the ->do_request callbacks. As a future improvement, sense_len
assignment might be unified across all ATAPI devices. Borislav to
check with specs and test.As a result, get rid of ide_queue_pc_head() and
drive->request_sense_rq.tj: * Init request sense ide_atapi_pc from sense request. In the
longer timer, it would probably better to fold
ide_create_request_sense_cmd() into its only current user -
ide_floppy_get_format_progress().* ide_retry_pc() no longer takes @disk.
CC: Bartlomiej Zolnierkiewicz
CC: FUJITA Tomonori
Signed-off-by: Borislav Petkov
Signed-off-by: Tejun Heo -
Impact: rq->buffer usage cleanup
ide-atapi uses rq->buffer as private opaque value for internal special
requests. rq->special isn't used for these cases (the only case where
rq->special is used is for ide-tape rw requests). Use rq->special
instead.Signed-off-by: Tejun Heo
Cc: Jens Axboe -
Impact: remove unnecessary code path
Block pc requests always use bio and rq->data is always NULL. No need
to worry about !rq->bio cases in idefloppy_block_pc_cmd(). Note that
ide-atapi uses ide_pio_bytes() for bio PIO transfer which handle sg
fine.Signed-off-by: Tejun Heo
Cc: Jens Axboe
01 Apr, 2009
2 commits
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* Fix ide_init_sg_cmd() setup for non-fs requests.
* Convert ide_pc_intr() to use ide_pio_bytes() for floppy media.
* Remove no longer needed ide_io_buffers() and sg/sg_cnt fields
from struct ide_atapi_pc.* Remove partial completions; kill idefloppy_update_buffers(), as a
result.* Add some more debugging statements.
Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Borislav Petkov
Signed-off-by: Bartlomiej Zolnierkiewicz -
struct ide_atapi_pc is often allocated on the stack and size of ->pc_buf
size is 256 bytes. However since only ide_floppy_create_read_capacity_cmd()
and idetape_create_inquiry_cmd() require such size allocate buffers for
these pc-s explicitely and decrease ->pc_buf size to 64 bytes.Cc: Borislav Petkov
Signed-off-by: Bartlomiej Zolnierkiewicz
27 Mar, 2009
4 commits
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* Pass number of bytes instead of sectors to ide_init_sg_cmd().
* Pass number of bytes to process to ide_pio_sector() and rename
it to ide_pio_bytes().* Rename ->nsect field to ->nbytes in struct ide_cmd and use
->nbytes, ->nleft and ->cursg_ofs to keep track of number of
bytes instead of sectors.There should be no functional changes caused by this patch.
Acked-by: Borislav Petkov
Signed-off-by: Bartlomiej Zolnierkiewicz -
* Pass command to ide_issue_pc() and update ->do_request methods
in ide-{cd,floppy,tape}.c accordingly.* Convert ide_pktcmd_tf_load() to ide_init_packet_cmd() which
just initializes command structure and use do_rw_taskfile()
to load ATA_CMD_PACKET commands.While at it:
* Rename ide{floppy,tape}_issue_pc() to ide_{floppy,tape}_issue_pc().
There should be no functional changes caused by this patch.
Acked-by: Borislav Petkov
Signed-off-by: Bartlomiej Zolnierkiewicz -
* Set IDE_TFLAG_WRITE flag and ->rq also for ATA_CMD_PACKET
commands.* Pass command to ->dma_setup method and update all its
implementations accordingly.* Pass command instead of request to ide_build_sglist(),
*_build_dmatable() and ide_map_sg().While at it:
* Fix scc_dma_setup() documentation + use ATA_DMA_WR define.
* Rename sgiioc4_build_dma_table() to sgiioc4_build_dmatable(),
change return value type to 'int' and drop unused 'ddir'
argument.* Do some minor cleanups in [tx4939]ide_dma_setup().
There should be no functional changes caused by this patch.
Acked-by: Borislav Petkov
Signed-off-by: Bartlomiej Zolnierkiewicz -
* Add ide_rq_bytes() helper.
* Add blk_noretry_request() quirk to ide_complete_rq() (currently only fs
requests can be marked as "noretry" so there is no change in behavior).* Switch current ide_end_request() users to use ide_complete_rq().
[ No need to check for rq->nr_sectors == 0 in {ide_dma,task_pio}_intr(),
nsectors == 0 in cdrom_end_request() and err == 0 in ide_do_devset(). ]* Remove no longer needed ide_end_request().
There should be no functional changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz