- 24 4月, 2014 1 次提交
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由 Ming Lei 提交于
set->tags should be freed in blk_mq_free_tag_set(). Signed-off-by: NMing Lei <tom.leiming@gmail.com> Signed-off-by: NJens Axboe <axboe@fb.com>
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- 23 4月, 2014 2 次提交
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由 Fabian Frederick 提交于
nr_segs is no longer used in bio_alloc_map_data since c8db4448 ("block: Don't save/copy bvec array anymore") Signed-off-by: NFabian Frederick <fabf@skynet.be> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Fabian Frederick 提交于
bs is no longer used in biovec_create_pool since 9f060e22 ("block: Convert integrity to bvec_alloc_bs()") Signed-off-by: NFabian Frederick <fabf@skynet.be> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: NJens Axboe <axboe@fb.com>
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- 22 4月, 2014 6 次提交
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由 Fabian Frederick 提交于
blk_throtl_dispatch_work_fn is only used in blk-throttle.c Cc: Jens Axboe <axboe@kernel.dk> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: NFabian Frederick <fabf@skynet.be> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Randy Dunlap 提交于
Fix new kernel-doc warnings in fs/bio.c: Warning(fs/bio.c:316): No description found for parameter 'bio' Warning(fs/bio.c:316): No description found for parameter 'parent' Signed-off-by: NRandy Dunlap <rdunlap@infradead.org> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Ming Lei 提交于
The patch basically reverts the patch of(blk-mq: initialize request on allocation) in Jens's tree(already in -next), and only initialize req->q in allocation for two reasons: - presumed cache hotness on completion - blk_rq_tagged(rq) depends on reset of req->mq_ctx Signed-off-by: NMing Lei <tom.leiming@gmail.com> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Ming Lei 提交于
Cc: Jörg-Volker Peetz <jvpeetz@web.de> Cc: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: NMing Lei <tom.leiming@gmail.com> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Ming Lei 提交于
type of set->tags is struct blk_mq_tags **. Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NMing Lei <tom.leiming@gmail.com> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Ming Lei 提交于
Avoid memory leak in the failure path. Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NMing Lei <tom.leiming@gmail.com> Signed-off-by: NJens Axboe <axboe@fb.com>
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- 17 4月, 2014 14 次提交
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由 Jens Axboe 提交于
Store the pointer to the page there, so we can always safely reference it from end_io context where ->bio may have been cleared. Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Jens Axboe 提交于
Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Jens Axboe 提交于
Since we are now, by default, applying timer slack to expiry times, the logic for when to modify a timer in the block code is suboptimal. The block layer keeps a forward rolling timer per queue for all requests, and modifies this timer if a request has a shorter timeout than what the current expiry time is. However, this breaks down when our rounded timer values get applied slack. Then each new request ends up modifying the timer, since we're still a little in front of the timer + slack. Fix this by allowing a tolerance of HZ / 2, the timeout handling doesn't need to be very precise. This drastically cuts down the number of timer modifications we have to make. Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
This allows to mirror the blk-mq code flow for more a more readable I/O completion handler in SCSI. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
We will use this work_struct to requeue scsi commands from the completion handler as well, so give it a more generic name. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
This allows to requeue a request that has been accepted by ->queue_rq earlier. This is needed by the SCSI layer in various error conditions. The existing internal blk_mq_requeue_request is renamed to __blk_mq_requeue_request as it is a lower level building block for this funtionality. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
Add a helper to unconditionally kick contexts of a queue. This will be needed by the SCSI layer to provide fair queueing between multiple devices on a single host. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
Add a blk-mq equivalent to blk_delay_queue so that the scsi layer can ask to be kicked again after a delay. Signed-off-by: NChristoph Hellwig <hch@lst.de> Modified by me to kill the unnecessary preempt disable/enable in the delayed workqueue handler. Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
Add two unlinkely branches to make sure the resid is initialized correctly for bidi request pairs, and the second request gets properly freed. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
Split out the bottom half of blk_mq_end_io so that drivers can perform work when they know a request has been completed, but before it has been freed. This also obsoletes blk_mq_end_io_partial as drivers can now pass any value to blk_update_request directly. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Jens Axboe 提交于
blk_mq_work_fn() is always invoked off the bounded workqueues, so it can happily preempt among the queues in that set without causing any issues for blk-mq. Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Jens Axboe 提交于
UP or CONFIG_PREEMPT_NONE will return 0, and what we really want to check is whether or not we are on the right CPU. So don't make PREEMPT part of this, just test the CPU in the mask directly. Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Jens Axboe 提交于
The friendly Intel kbuild test robot reported: drivers/cdrom/gdrom.c: In function 'gdrom_readdisk_dma': drivers/cdrom/gdrom.c:605:3: error: 'struct request' has no member named 'buffer' Convert that from req->buffer to bio_data(rq->bio). Apparently my grep missed this one, and I don't build for Sega Dreamcast enough. Signed-off-by: NJens Axboe <axboe@fb.com>
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- 16 4月, 2014 9 次提交
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由 Christoph Hellwig 提交于
Instead of setting the REQ_QUEUED flag on each of them just take it into account in the only macro checking it. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
Add a new blk_mq_tag_set structure that gets set up before we initialize the queue. A single blk_mq_tag_set structure can be shared by multiple queues. Signed-off-by: NChristoph Hellwig <hch@lst.de> Modular export of blk_mq_{alloc,free}_tagset added by me. Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
If we want to share tag and request allocation between queues we cannot initialize the request at init/free time, but need to initialize it at allocation time as it might get used for different queues over its lifetime. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
The current blk_mq_init_commands/blk_mq_free_commands interface has a two problems: 1) Because only the constructor is passed to blk_mq_init_commands there is no easy way to clean up when a comman initialization failed. The current code simply leaks the allocations done in the constructor. 2) There is no good place to call blk_mq_free_commands: before blk_cleanup_queue there is no guarantee that all outstanding commands have completed, so we can't free them yet. After blk_cleanup_queue the queue has usually been freed. This can be worked around by grabbing an unconditional reference before calling blk_cleanup_queue and dropping it after blk_mq_free_commands is done, although that's not exatly pretty and driver writers are guaranteed to get it wrong sooner or later. Both issues are easily fixed by making the request constructor and destructor normal blk_mq_ops methods. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
Drivers shouldn't have to care about the block layer setting aside a request to implement the flush state machine. We already override the mq context and tag to make it more transparent, but so far haven't deal with the driver private data in the request. Make sure to override this as well, and while we're at it add a proper helper sitting in blk-mq.c that implements the full impersonation. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
Drivers can reach their private data easily using the blk_mq_rq_to_pdu helper and don't need req->special. By not initializing it code can be simplified nicely, and we also shave off a few more instructions from the I/O path. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Christoph Hellwig 提交于
Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Jens Axboe 提交于
This was used in the olden days, back when onions were proper yellow. Basically it mapped to the current buffer to be transferred. With highmem being added more than a decade ago, most drivers map pages out of a bio, and rq->buffer isn't pointing at anything valid. Convert old style drivers to just use bio_data(). For the discard payload use case, just reference the page in the bio. Signed-off-by: NJens Axboe <axboe@fb.com>
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由 Jens Axboe 提交于
We don't like this, but things have diverged with the blk-mq fixes in 3.15-rc1. So merge it in.
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- 14 4月, 2014 4 次提交
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由 Linus Torvalds 提交于
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由 Geert Uytterhoeven 提交于
Some versions of gcc even warn about it: mm/shmem.c: In function ‘shmem_file_aio_read’: mm/shmem.c:1414: warning: ‘error’ may be used uninitialized in this function If the loop is aborted during the first iteration by one of the two first break statements, error will be uninitialized. Introduced by commit 6e58e79d ("introduce copy_page_to_iter, kill loop over iovec in generic_file_aio_read()"). Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Acked-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Geert Uytterhoeven 提交于
On 32 bit, size_t is "unsigned int", not "unsigned long", causing the following warning when comparing with PAGE_SIZE, which is always "unsigned long": fs/cifs/file.c: In function ‘cifs_readdata_to_iov’: fs/cifs/file.c:2757: warning: comparison of distinct pointer types lacks a cast Introduced by commit 7f25bba8 ("cifs_iovec_read: keep iov_iter between the calls of cifs_readdata_to_iov()"), which changed the signedness of "remaining" and the code from min_t() to min(). Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux由 Linus Torvalds 提交于
Pull slab changes from Pekka Enberg: "The biggest change is byte-sized freelist indices which reduces slab freelist memory usage: https://lkml.org/lkml/2013/12/2/64" * 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux: mm: slab/slub: use page->list consistently instead of page->lru mm/slab.c: cleanup outdated comments and unify variables naming slab: fix wrongly used macro slub: fix high order page allocation problem with __GFP_NOFAIL slab: Make allocations with GFP_ZERO slightly more efficient slab: make more slab management structure off the slab slab: introduce byte sized index for the freelist of a slab slab: restrict the number of objects in a slab slab: introduce helper functions to get/set free object slab: factor out calculate nr objects in cache_estimate
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- 13 4月, 2014 4 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild由 Linus Torvalds 提交于
Pull misc kbuild changes from Michal Marek: "Here is the non-critical part of kbuild: - One bogus coccinelle check removed, one check fixed not to suggest the obsolete PTR_RET macro - scripts/tags.sh does not index the generated *.mod.c files - new objdiff tool to list differences between two versions of an object file - A fix for scripts/bootgraph.pl" * 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: scripts/coccinelle: Use PTR_ERR_OR_ZERO scripts/bootgraph.pl: Add graphic header scripts: objdiff: detect object code changes between two commits Coccicheck: Remove memcpy to struct assignment test scripts/tags.sh: Ignore *.mod.c
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由 Mikulas Patocka 提交于
This patch fixes I/O errors with the sym53c8xx_2 driver when the disk returns QUEUE FULL status. When the controller encounters an error (including QUEUE FULL or BUSY status), it aborts all not yet submitted requests in the function sym_dequeue_from_squeue. This function aborts them with DID_SOFT_ERROR. If the disk has full tag queue, the request that caused the overflow is aborted with QUEUE FULL status (and the scsi midlayer properly retries it until it is accepted by the disk), but the sym53c8xx_2 driver aborts the following requests with DID_SOFT_ERROR --- for them, the midlayer does just a few retries and then signals the error up to sd. The result is that disk returning QUEUE FULL causes request failures. The error was reproduced on 53c895 with COMPAQ BD03685A24 disk (rebranded ST336607LC) with command queue 48 or 64 tags. The disk has 64 tags, but under some access patterns it return QUEUE FULL when there are less than 64 pending tags. The SCSI specification allows returning QUEUE FULL anytime and it is up to the host to retry. Signed-off-by: NMikulas Patocka <mpatocka@redhat.com> Cc: Matthew Wilcox <matthew@wil.cx> Cc: James Bottomley <JBottomley@Parallels.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Paul Mackerras 提交于
Commit 8f619b54 ("powerpc/ppc64: Do not turn AIL (reloc-on interrupts) too early") added code to set the AIL bit in the LPCR without checking whether the kernel is running in hypervisor mode. The result is that when the kernel is running as a guest (i.e., under PowerKVM or PowerVM), the processor takes a privileged instruction interrupt at that point, causing a panic. The visible result is that the kernel hangs after printing "returning from prom_init". This fixes it by checking for hypervisor mode being available before setting LPCR. If we are not in hypervisor mode, we enable relocation-on interrupts later in pSeries_setup_arch using the H_SET_MODE hcall. Signed-off-by: NPaul Mackerras <paulus@samba.org> Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Davidlohr Bueso 提交于
Commits 11d4616b ("futex: revert back to the explicit waiter counting code") and 69cd9eba ("futex: avoid race between requeue and wake") changed some of the finer details of how we think about futexes. One was a late fix and the other a consequence of overlooking the whole requeuing logic. The first change caused our documentation to be incorrect, and the second made us aware that we need to explicitly add more details to it. Signed-off-by: NDavidlohr Bueso <davidlohr@hp.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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