- 05 10月, 2009 1 次提交
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由 Jens Axboe 提交于
We cannot delay for the first dispatch of the async queue if it hasn't dispatched at all, since that could present a local user DoS attack vector using an app that just did slow timed sync reads while filling memory. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 04 10月, 2009 3 次提交
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由 Martin K. Petersen 提交于
Not all users of the topology information want to use libblkid. Provide the topology information through bdev ioctls. Also clarify sector size comments for existing BLK ioctls. Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
We should use the sysfs modified slice sync value, in case it differs from the default. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
Don't think that's necessarily a perfect description of what this option fiddles with, but it's probably better than 'desktop'. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 03 10月, 2009 3 次提交
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由 Jens Axboe 提交于
This slowly ramps up the async queue depth based on the time passed since the sync IO, and doesn't allow async at all until a sync slice period has passed. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Vivek Goyal 提交于
o Do not allow more than max_dispatch requests from an async queue, if some sync request has finished recently. This is in the hope that sync activity is still going on in the system and we might receive a sync request soon. Most likely from a sync queue which finished a request and we did not enable idling on it. Signed-off-by: NVivek Goyal <vgoyal@redhat.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
This is basically identical to what Vivek Goyal posted, but combined into one and labelled 'desktop' instead of 'fairness'. The goal is to continue to improve on the latency side of things as it relates to interactiveness, keeping the questionable bits under this sysfs tunable so it would be easy for throughput-only people to turn off. Apart from adding the interactive sysfs knob, it also adds the behavioural change of allowing slice idling even if the hardware does tagged command queuing. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 02 10月, 2009 33 次提交
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由 Jun'ichi Nomura 提交于
Since 2.6.31 now has request-based device-mapper, it's useful to have a tracepoint for request-remapping as well as bio-remapping. This patch adds a tracepoint for request-remapping, trace_block_rq_remap(). Signed-off-by: NKiyoshi Ueda <k-ueda@ct.jp.nec.com> Signed-off-by: NJun'ichi Nomura <j-nomura@ce.jp.nec.com> Cc: Alasdair G Kergon <agk@redhat.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Christoph Hellwig 提交于
Currently we set the bio size to the byte equivalent of the blocks to be trimmed when submitting the initial DISCARD ioctl. That means it is subject to the max_hw_sectors limitation of the HBA which is much lower than the size of a DISCARD request we can support. Add a separate max_discard_sectors tunable to limit the size for discard requests. We limit the max discard request size in bytes to 32bit as that is the limit for bio->bi_size. This could be much larger if we had a way to pass that information through the block layer. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Christoph Hellwig 提交于
prepare_discard_fn() was being called in a place where memory allocation was effectively impossible. This makes it inappropriate for all but the most trivial translations of Linux's DISCARD operation to the block command set. Additionally adding a payload there makes the ownership of the bio backing unclear as it's now allocated by the device driver and not the submitter as usual. It is replaced with QUEUE_FLAG_DISCARD which is used to indicate whether the queue supports discard operations or not. blkdev_issue_discard now allocates a one-page, sector-length payload which is the right thing for the common ATA and SCSI implementations. The mtd implementation of prepare_discard_fn() is replaced with simply checking for the request being a discard. Largely based on a previous patch from Matthew Wilcox <matthew@wil.cx> which did the prepare_discard_fn but not the different payload allocation yet. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Suresh Jayaraman 提交于
While testing Swap over NFS patchset, I noticed an oops that was triggered during swapon. Investigating further, the NULL pointer deference is due to the SSD device check/optimization in the swapon code that assumes s_bdev could never be NULL. inode->i_sb->s_bdev could be NULL in a few cases. For e.g. one such case is loopback NFS mount, there could be others as well. Fix this by ensuring s_bdev is not NULL before we try to deference s_bdev. Signed-off-by: NSuresh Jayaraman <sjayaraman@suse.de> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 H Hartley Sweeten 提交于
As mentioned in Documentation/CodingStyle, move EXPORT* macro's to the line immediately after the closing function brace line. Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Zdenek Kabelac 提交于
Add missing blk_trace_remove_sysfs to be in pair with blk_trace_init_sysfs introduced in commit 1d54ad6d. Release kobject also in case the request_fn is NULL. Problem was noticed via kmemleak backtrace when some sysfs entries were note properly destroyed during device removal: unreferenced object 0xffff88001aa76640 (size 80): comm "lvcreate", pid 2120, jiffies 4294885144 hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 f0 65 a7 1a 00 88 ff ff .........e...... 90 66 a7 1a 00 88 ff ff 86 1d 53 81 ff ff ff ff .f........S..... backtrace: [<ffffffff813f9cc6>] kmemleak_alloc+0x26/0x60 [<ffffffff8111d693>] kmem_cache_alloc+0x133/0x1c0 [<ffffffff81195891>] sysfs_new_dirent+0x41/0x120 [<ffffffff81194b0c>] sysfs_add_file_mode+0x3c/0xb0 [<ffffffff81197c81>] internal_create_group+0xc1/0x1a0 [<ffffffff81197d93>] sysfs_create_group+0x13/0x20 [<ffffffff810d8004>] blk_trace_init_sysfs+0x14/0x20 [<ffffffff8123f45c>] blk_register_queue+0x3c/0xf0 [<ffffffff812447e4>] add_disk+0x94/0x160 [<ffffffffa00d8b08>] dm_create+0x598/0x6e0 [dm_mod] [<ffffffffa00de951>] dev_create+0x51/0x350 [dm_mod] [<ffffffffa00de823>] ctl_ioctl+0x1a3/0x240 [dm_mod] [<ffffffffa00de8f2>] dm_compat_ctl_ioctl+0x12/0x20 [dm_mod] [<ffffffff81177bfd>] compat_sys_ioctl+0xcd/0x4f0 [<ffffffff81036ed8>] sysenter_dispatch+0x7/0x2c [<ffffffffffffffff>] 0xffffffffffffffff Signed-off-by: NZdenek Kabelac <zkabelac@redhat.com> Reviewed-by: NLi Zefan <lizf@cn.fujitsu.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Alexander Beregalov 提交于
Fix these build errors when CONFIG_PROC_FS is not set: drivers/block/cciss.c: In function 'cciss_show_raid_level': drivers/block/cciss.c:623: error: 'RAID_UNKNOWN' undeclared (first use in this function) drivers/block/cciss.c:626: error: 'raid_label' undeclared (first use in this function) drivers/block/cciss.c: In function 'cciss_geometry_inquiry': drivers/block/cciss.c:2696: error: 'RAID_UNKNOWN' undeclared (first use in this function) Signed-off-by: NAlexander Beregalov <a.beregalov@gmail.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Martin K. Petersen 提交于
Stacking devices do not have an inherent max_hw_sector limit. Set the default to INT_MAX so we are bounded only by capabilities of the underlying storage. Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Martin K. Petersen 提交于
The topology changes unintentionally caused SAFE_MAX_SECTORS to be set for stacking devices. Set the default limit to BLK_DEF_MAX_SECTORS and provide SAFE_MAX_SECTORS in blk_queue_make_request() for legacy hw drivers that depend on the old behavior. Acked-by: NMike Snitzer <snitzer@redhat.com> Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com> 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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由 Stephen M. Cameron 提交于
cciss: Dynamically allocate the drive_info_struct for each logical drive. This reduces the size of the per-hba ctlr_info structure from 106936 bytes to 8132 bytes. That's on 32-bit systems. On 64-bit systems, the improvement is even bigger. Without this, the ctlr_info struct is so big that the driver won't even load on a 64 bit system if CISS_MAX_LUN was at it's current setting of 1024 logical drives. Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
Add usage_count attribute to each logical drive at /sys/devices/<dev>/ccissX/cXdY/usage_count for controller X, logical drive Y. The usage count is the number of times the device has currently been opened. Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
and change get rid of some magic numbers in raid lavel decoding. Add raid_level attribute to each logical drive at /sys/devices/<dev>/ccissX/cXdY/raid_level for controller X, logical drive Y Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
cciss: fix some magic numbers in the raid-level decoding Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
Add lunid attribute to each logical drive at /sys/devices/<dev>/ccissX/cXdY/lunid for controller X, logical drive Y Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
Don't check h->busy_initializing in cciss_open(). Open won't be called before things are ready, but h->busy_initializing won't be unset until after the initial rebuild_lun_table is finished. But, to read the partitions, cciss_open will be called for each logical drive during rebuild_lun_table. If cciss_open checks h->busy_initializing, then the reading of the partition information during the initial rebuild_lun_table will fail, which is especially bad news if it happens to be your boot device. Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
Preserve all 8 bytes of the LunID field returned by CCISS_REPORT_LOGICAL instead of only saving 4 bytes. This fixes a bug with logical volume addressing encountered on an MSA2012. Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
Silence noisy per-disk messages output by cciss_read_capacity Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
Fix bug that free_hba was calling put_disk for all gendisk[] pointers -- all 1024 of them -- regardless of whether the were used or not (NULL). This bug could cause rmmod to oops if logical drives had been deleted during the driver's lifetime. Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
When rebuild_lun_table is reached via sysfs, the usage count that is checked prior to messing with c0d0 has different constraints (must be zero) than if rebuild_lun_table is reached via ioctl (must be one.) Fix rebuild_lun_table to take that into account. Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
When removing a logical drive, clear all the information that is now exposed by sysfs (e.g. vendor, model, serial number.) Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
For c0dx where x is not 0, we handle deletion and addition simply, but for c0d0, there is the special case that even when there's no disk, the device node exists so that the controller may be accessed. So, for c0d0, we only create the sysfs entries once, when a controller is added, and only remove them once, when a controller is being taken down. Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
Handle cases when cciss_add_disk fails. Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
Handle failure of blk_init_queue gracefully in cciss_add_disk. Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
Rearrange logical drive sysfs code to make the "changing a disk" path work. Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
Dynamically allocate struct device for each logical drive as needed instead of allocating the maximum we would ever need at driver init time. Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Stephen M. Cameron 提交于
Remove some unused code in rebuild_lun_table() Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Andrew Patterson 提交于
Added /sys/bus/pci/devices/<dev>/ccissX/rescan sysfs entry used to kick off a rescan that discovers logical drive topology changes. Signed-off-by: NAndrew Patterson <andrew.patterson@hp.com> Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Acked-by: NMike Miller <mike.miller@hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Andrew Patterson 提交于
Replace the use of one scan kthread per controller with one per driver. Use a queue to hold a list of controllers that need to be rescanned with routines to add and remove controllers from the queue. Fix locking and completion handling to prevent a hang during rmmod. Signed-off-by: NAndrew Patterson <andrew.patterson@hp.com> Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Acked-by: NMike Miller <mike.miller@hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Andrew Patterson 提交于
Sysfs entries for logical drives need to be removed when a drive is deleted during driver cleanup. Signed-off-by: NAndrew Patterson <andrew.patterson@hp.com> Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com> Acked-by: NMike Miller <mike.miller@hp.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Randy Dunlap 提交于
Change schedule_timeout() parameter to not be specific to HZ=1000. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Acked-by: NMike Miller <mike.miller@hp.com> Cc: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: "Cameron, Steve" <Steve.Cameron@hp.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Alexey Dobriyan 提交于
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Cc: Yang Hongyang <yanghy@cn.fujitsu.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Alexey Dobriyan 提交于
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Cc: Chirag Kantharia <chirag.kantharia@hp.com> Cc: Tejun Heo <tj@kernel.org> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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