- 02 11月, 2007 5 次提交
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由 Jens Axboe 提交于
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Aaron Carroll 提交于
After switching data directions, deadline always starts the next batch from the lowest-sector request. This gives excessive deadline expiries and large latency and throughput disparity between high- and low-sector requests; an order of magnitude in some tests. This patch changes the batching behaviour so new batches start from the request whose expiry is earliest. Signed-off-by: NAaron Carroll <aaronc@gelato.unsw.edu.au> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Aaron Carroll 提交于
The deadline I/O scheduler does not reset the batch count when starting a new batch at a higher-sectored request. This means the second and subsequent batch in the same data direction will never exceed a single request in size whenever higher-sectored requests are pending. This patch gives new batches in the same data direction as old ones their full quota of requests by resetting the batch count. Signed-off-by: NAaron Carroll <aaronc@gelato.unsw.edu.au> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Aaron Carroll 提交于
Factor finding the next request in sector-sorted order into a function deadline_latter_request. Signed-off-by: NAaron Carroll <aaronc@gelato.unsw.edu.au> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
sg_mark_end() overwrites the page_link information, but all users want __sg_mark_end() behaviour where we just set the end bit. That is the most natural way to use the sg list, since you'll fill it in and then mark the end point. So change sg_mark_end() to only set the termination bit. Add a sg_magic debug check as well, and clear a chain pointer if it is set. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 29 10月, 2007 7 次提交
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由 Philip Langdale 提交于
The conversion of handlers to compat_blkdev_ioctl accidentally disabled handling of most ioctl numbers on block devices because of a typo. Fix the one line to enable it all again. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NJens Axboe <axboe@carl.home.kernel.dk>
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由 Jens Axboe 提交于
For the locking to work, only the tag map and tag bit map may be shared (incidentally, I was just explaining this to Nick yesterday, but I apparently didn't review the code well enough myself). But we also share the busy list! The busy_list must be queue private, or we need a block_queue_tag covering lock as well. So we have to move the busy_list to the queue. This'll work fine, and it'll actually also fix a problem with blk_queue_invalidate_tags() which will invalidate tags across all shared queues. This is a bit confusing, the low level driver should call it for each queue seperately since otherwise you cannot kill tags on just a single queue for eg a hard drive that stops responding. Since the function has no callers currently, it's not an issue. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Nick Piggin 提交于
The block queue tag map can use lock bitops. Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Oleg Nesterov 提交于
cfq_get_queue()->cfq_find_alloc_queue() can fail, check the returned value. Signed-off-by: NOleg Nesterov <oleg@tv-sign.ru> Note that this isn't a bug at the moment, since the regular IO path does not call this path without __GFP_WAIT set. However, it could be a future bug, so I've applied it. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Oleg Nesterov 提交于
blk_sync_queue() cancels the timer, but forgets to cancel the work. Signed-off-by: NOleg Nesterov <oleg@tv-sign.ru> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Oleg Nesterov 提交于
Spotted by Nick <gentuu@gmail.com>, perhaps explains the first trace in http://bugzilla.kernel.org/show_bug.cgi?id=9180. cfq_exit_queue() should cancel cfqd->unplug_work before freeing cfqd. blk_sync_queue() seems unneeded, removed. Q: why cfq_exit_queue() calls cfq_shutdown_timer_wq() twice? Signed-off-by: NOleg Nesterov <oleg@tv-sign.ru> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jerome Marchand 提交于
The nr_sector argument of drive_stat_acct() is not used anymore since the read and write sectors statistics are now updated in end_that_request_first(). This patch removes the useless argument. Signed-off-by: NJerome Marchand <jmarchan@redhat.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 24 10月, 2007 1 次提交
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由 Jens Axboe 提交于
Most drivers need to set length and offset as well, so may as well fold those three lines into one. Add sg_assign_page() for those two locations that only needed to set the page, where the offset/length is set outside of the function context. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 23 10月, 2007 3 次提交
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由 Jens Axboe 提交于
Since blk_rq_map_sg() sets the termination bit at the end of the sg table, we could see it prematurely on the next mapping unless we force drivers to do a full sg_init_table() prior to each mapping. So force clear the termination bit to avoid having to put that clear in the driver for every mapping. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
It's not a proper lvalue on all archs. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 20 10月, 2007 3 次提交
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由 Uwe Kleine-König 提交于
Signed-off-by: NUwe Kleine-König <ukleinek@informatik.uni-freiburg.de> Signed-off-by: NAdrian Bunk <bunk@kernel.org>
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由 Pavel Emelyanov 提交于
The task_struct->pid member is going to be deprecated, so start using the helpers (task_pid_nr/task_pid_vnr/task_pid_nr_ns) in the kernel. The first thing to start with is the pid, printed to dmesg - in this case we may safely use task_pid_nr(). Besides, printks produce more (much more) than a half of all the explicit pid usage. [akpm@linux-foundation.org: git-drm went and changed lots of stuff] Signed-off-by: NPavel Emelyanov <xemul@openvz.org> Cc: Dave Airlie <airlied@linux.ie> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Randy Dunlap 提交于
Fix kernel-api docbook contents problems. docproc: linux-2.6.23-git13/include/asm-x86/unaligned_32.h: No such file or directory Warning(linux-2.6.23-git13//include/linux/list.h:482): bad line: of list entry Warning(linux-2.6.23-git13//mm/filemap.c:864): No description found for parameter 'ra' Warning(linux-2.6.23-git13//block/ll_rw_blk.c:3760): No description found for parameter 'req' Warning(linux-2.6.23-git13//include/linux/input.h:1077): No description found for parameter 'private' Warning(linux-2.6.23-git13//include/linux/input.h:1077): No description found for parameter 'cdev' Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: WU Fengguang <wfg@mail.ustc.edu.cn> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 18 10月, 2007 1 次提交
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由 Jens Axboe 提交于
Don't ever use sg_next() on the last entry, it may not be valid! Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 17 10月, 2007 4 次提交
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由 Peter Zijlstra 提交于
provide BDI constructor/destructor hooks [akpm@linux-foundation.org: compile fix] Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jens Axboe 提交于
The memset() of the sg entry was originally removed, because it could overwrite a chain pointer. But it's quite OK to memset() it when we know it's a valid entry, since it can't contain a chain pointer. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Fengguang Wu 提交于
Remove the size limit max_sectors_kb imposed on max_readahead_kb. The size restriction is unreasonable. Especially when max_sectors_kb cannot grow larger than max_hw_sectors_kb, which can be rather small for some disk drives. Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: NFengguang Wu <wfg@mail.ustc.edu.cn> Acked-by: NJens Axboe <jens.axboe@oracle.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mike Travis 提交于
Convert cpu_sibling_map from a static array sized by NR_CPUS to a per_cpu variable. This saves sizeof(cpumask_t) * NR unused cpus. Access is mostly from startup and CPU HOTPLUG functions. Signed-off-by: NMike Travis <travis@sgi.com> Cc: Andi Kleen <ak@suse.de> Cc: Christoph Lameter <clameter@sgi.com> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 16 10月, 2007 8 次提交
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由 Jens Axboe 提交于
Expose this setting for now, so that users can play with enabling large commands without defaulting it to on globally. This is a debug patch, it will be dropped for the final versions. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
Convert the main rq mapper (blk_rq_map_sg()) to the sg helper setup. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
Then we can get rid of ->issue_flush_fn() and all the driver private implementations of that. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
This implements functionality to pass down or insert a barrier in a queue, without having data attached to it. The ->prepare_flush_fn() infrastructure from data barriers are reused to provide this functionality. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
End of device check is done twice in __generic_make_request() and it's fully inlined each time. Factor out bio_check_eod(). Signed-off-by: NTejun Heo <htejun@gmail.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
We can use this helper in the elevator core for BLKPREP_KILL, and it'll also be useful for the empty barrier patch. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
Fix ?: construct, a typo, whitespace, and similar. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Arjan van de Ven 提交于
struct file_operations is generally const (to avoid false sharing and get compile time errors on accidental writing to this shared structure); bsg recently added one of these without the const keyword. Patch below marks it const.... Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 13 10月, 2007 4 次提交
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由 Linus Torvalds 提交于
IOW, it needs to depend on both CONFIG_BLOCK and CONFIG_COMPAT. Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Greg Kroah-Hartman 提交于
struct cdev does not need the kobject name to be set, as it is never used. This patch fixes up the few places it is set. Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de> Acked-by: NMauro Carvalho Chehab <mchehab@infradead.org>
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由 Greg Kroah-Hartman 提交于
A number of different drivers incorrect access the kobject name field directly. This is not correct as the name might not be in the array. Use the proper accessor function instead.
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由 Kay Sievers 提交于
This changes the uevent buffer functions to use a struct instead of a long list of parameters. It does no longer require the caller to do the proper buffer termination and size accounting, which is currently wrong in some places. It fixes a known bug where parts of the uevent environment are overwritten because of wrong index calculations. Many thanks to Mathieu Desnoyers for finding bugs and improving the error handling. Signed-off-by: NKay Sievers <kay.sievers@vrfy.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 12 10月, 2007 1 次提交
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由 Jens Axboe 提交于
Add an extra CONFIG_BLOCK_COMPAT that we can use in the Makefile Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 10 10月, 2007 3 次提交
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由 Arnd Bergmann 提交于
The floppy ioctls are used by multiple drivers, so they should be handled in a shared location. Also, add minor cleanups. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Arnd Bergmann 提交于
These are shared by all cd-rom drivers and should have common handlers. Do slight cosmetic cleanups in the process. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Arnd Bergmann 提交于
BLKPG is common to all block devices, so it should be handled by common code. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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