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* kernel/smp.c: remove cpumask_ipiRoman Gushchin2014-01-311-16/+1
| | | | | | | | | | | | | | | | | | After commit 9a46ad6d6df3 ("smp: make smp_call_function_many() use logic similar to smp_call_function_single()"), cfd->cpumask is accessed only in smp_call_function_many(). So there is no more need to copy it into cfd->cpumask_ipi before putting csd into the list. The cpumask_ipi field is obsolete and can be removed. Signed-off-by: Roman Gushchin <klamm@yandex-team.ru> Cc: Ingo Molnar <mingo@kernel.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Wang YanQing <udknight@gmail.com> Cc: Xie XiuQi <xiexiuqi@huawei.com> Cc: Shaohua Li <shli@fusionio.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kernel: use lockless list for smp_call_function_singleChristoph Hellwig2014-01-313-43/+19
| | | | | | | | | | | Make smp_call_function_single and friends more efficient by using a lockless list. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/net/phy/mdio_bus.c: call put_device on device_register() failureLevente Kurusa2014-01-311-0/+1
| | | | | | | | | | | | | | It is required to call put_device() if device_register() fails, so that we give up the last reference to the device. Calling put_device allows for mdiobus_release to be executed, kfreeing the bus. Signed-off-by: Levente Kurusa <levex@linux.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: David Daney <david.daney@cavium.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/video/backlight/lcd.c: call put_device if device_register failsLevente Kurusa2014-01-311-1/+1
| | | | | | | | | | | | | Currently we kfree the container of the device which failed to register. This is wrong as the last reference is not given up with a put_device call. Also, now that we have put_device() callen, we no longer need the kfree as the new_ld->dev.release function will take care of kfreeing the associated memory. Signed-off-by: Levente Kurusa <levex@linux.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* memblock, bootmem: restore goal for alloc_lowYinghai Lu2014-01-311-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | Now we have memblock_virt_alloc_low to replace original bootmem api in swiotlb. But we should not use BOOTMEM_LOW_LIMIT for arch that does not support CONFIG_NOBOOTMEM, as old api take 0. | #define alloc_bootmem_low(x) \ | __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0) |#define alloc_bootmem_low_pages_nopanic(x) \ | __alloc_bootmem_low_nopanic(x, PAGE_SIZE, 0) and we have #define BOOTMEM_LOW_LIMIT __pa(MAX_DMA_ADDRESS) for CONFIG_NOBOOTMEM. Restore goal to 0 to fix ia64 crash, that Tony found. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Reported-by: Tony Luck <tony.luck@gmail.com> Tested-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-3.14/drivers' of git://git.kernel.dk/linux-blockLinus Torvalds2014-01-3039-1895/+2435
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull block IO driver changes from Jens Axboe: - bcache update from Kent Overstreet. - two bcache fixes from Nicholas Swenson. - cciss pci init error fix from Andrew. - underflow fix in the parallel IDE pg_write code from Dan Carpenter. I'm sure the 1 (or 0) users of that are now happy. - two PCI related fixes for sx8 from Jingoo Han. - floppy init fix for first block read from Jiri Kosina. - pktcdvd error return miss fix from Julia Lawall. - removal of IRQF_SHARED from the SEGA Dreamcast CD-ROM code from Michael Opdenacker. - comment typo fix for the loop driver from Olaf Hering. - potential oops fix for null_blk from Raghavendra K T. - two fixes from Sam Bradshaw (Micron) for the mtip32xx driver, fixing an OOM problem and a problem with handling security locked conditions * 'for-3.14/drivers' of git://git.kernel.dk/linux-block: (47 commits) mg_disk: Spelling s/finised/finished/ null_blk: Null pointer deference problem in alloc_page_buffers mtip32xx: Correctly handle security locked condition mtip32xx: Make SGL container per-command to eliminate high order dma allocation drivers/block/loop.c: fix comment typo in loop_config_discard drivers/block/cciss.c:cciss_init_one(): use proper errnos drivers/block/paride/pg.c: underflow bug in pg_write() drivers/block/sx8.c: remove unnecessary pci_set_drvdata() drivers/block/sx8.c: use module_pci_driver() floppy: bail out in open() if drive is not responding to block0 read bcache: Fix auxiliary search trees for key size > cacheline size bcache: Don't return -EINTR when insert finished bcache: Improve bucket_prio() calculation bcache: Add bch_bkey_equal_header() bcache: update bch_bkey_try_merge bcache: Move insert_fixup() to btree_keys_ops bcache: Convert sorting to btree_keys bcache: Convert debug code to btree_keys bcache: Convert btree_iter to struct btree_keys bcache: Refactor bset_tree sysfs stats ...
| * mg_disk: Spelling s/finised/finished/Geert Uytterhoeven2014-01-221-1/+1
| | | | | | | | | | Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * null_blk: Null pointer deference problem in alloc_page_buffersRaghavendra K T2014-01-221-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we load the null_blk module with bs=8k we get following oops: [ 3819.812190] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 [ 3819.812387] IP: [<ffffffff81170aa5>] create_empty_buffers+0x28/0xaf [ 3819.812527] PGD 219244067 PUD 215a06067 PMD 0 [ 3819.812640] Oops: 0000 [#1] SMP [ 3819.812772] Modules linked in: null_blk(+) Fix that by resetting block size to PAGE_SIZE if it is greater than PAGE_SIZE Reported-by: Sumanth <sumantk2@linux.vnet.ibm.com> Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Reviewed-by: Matias Bjorling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * mtip32xx: Correctly handle security locked conditionSam Bradshaw2014-01-222-3/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | If power is removed during a secure erase, the drive will end up in a security locked condition. This patch causes the driver to identify, log, and flag the security lock state. IOs are prevented from submission to the drive until the locked state is addressed with a secure erase. Bumped version number to reflect this capability. Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * mtip32xx: Make SGL container per-command to eliminate high order dma allocationSam Bradshaw2014-01-222-97/+149
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mtip32xx driver makes a high order dma memory allocation to store a command index table, some dedicated buffers, and a command header & SGL blob. This allocation can fail with a surprise insert under low & fragmented memory conditions. This patch breaks these regions up into separate low order allocations and increases the maximum number of segments a single command SGL can have. We wanted to allow at least 256 segments for 1 MB direct IO. Since the command header occupies the first 0x80 bytes of the SGL blob, that meant we needed two 4k pages to contain the header and SGL. The two pages allow up to 504 SGL segments. Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * Merge branch 'for-jens' of ↵Jens Axboe2014-01-222-10/+29
| |\ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/linux-block into for-3.14/drivers
| | * floppy: bail out in open() if drive is not responding to block0 readJiri Kosina2014-01-172-10/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case reading of block 0 during open() fails, it is not the right thing to let open() succeed. Fix this by introducing FD_OPEN_SHOULD_FAIL_BIT flag, and setting it in case the bio callback encounters an error while trying to read block 0. As a bonus, this works around certain broken userspace (blkid), which is not able to properly handle read()s returning IO errors. Hence be nice to those, and bail out during open() already; if block 0 is not readable, read()s are not going to provide any meaningful data anyway. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | drivers/block/loop.c: fix comment typo in loop_config_discardOlaf Hering2014-01-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Discard requests are ignored if the encryption is enabled for the given loop device. Update comment to match the code, and similar comments elsewhere in the file. Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | drivers/block/cciss.c:cciss_init_one(): use proper errnosAndrew Morton2014-01-221-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | pci_driver.probe should return a meaningful errno, not -1. Cc: Jens Axboe <axboe@kernel.dk> Cc: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | drivers/block/paride/pg.c: underflow bug in pg_write()Dan Carpenter2014-01-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The test here can underflow so we pass bogus lengths to the hardware. It's a static checker fix and I don't know the impact. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | drivers/block/sx8.c: remove unnecessary pci_set_drvdata()Jingoo Han2014-01-221-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | drivers/block/sx8.c: use module_pci_driver()Jingoo Han2014-01-221-14/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Use module_pci_driver() macro which makes the code smaller and simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | bcache: Fix auxiliary search trees for key size > cacheline sizeKent Overstreet2014-01-081-14/+14
| | | | | | | | | | | | Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Don't return -EINTR when insert finishedKent Overstreet2014-01-081-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | We need to return -EINTR after a split because we invalidated iterators (and freed the btree node) - but if we were finished inserting, we don't want to redo the traversal. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Improve bucket_prio() calculationKent Overstreet2014-01-082-3/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | When deciding what order to reuse buckets we take into account both the bucket's priority (which indicates lru order) and also the amount of live data in that bucket. The way they were scaled together wasn't as correct as it could be... this patch improves and documents it. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Add bch_bkey_equal_header()Nicholas Swenson2014-01-083-8/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Checks if two keys have equivalent header fields. (good enough for replacement or merging) Used in bch_bkey_try_merge, and replacing a key in the btree. Signed-off-by: Nicholas Swenson <nks@daterainc.com> Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: update bch_bkey_try_mergeNicholas Swenson2014-01-083-16/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | Added generic header checks to bch_bkey_try_merge, which then calls the bkey specific function Removed extraneous checks from bch_extent_merge Signed-off-by: Nicholas Swenson <nks@daterainc.com>
| * | bcache: Move insert_fixup() to btree_keys_opsKent Overstreet2014-01-084-229/+257
| | | | | | | | | | | | | | | | | | | | | Now handling overlapping extents/keys is a method that's specific to what the btree node contains. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Convert sorting to btree_keysKent Overstreet2014-01-083-36/+33
| | | | | | | | | | | | | | | | | | More work to disentangle various code from struct btree Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Convert debug code to btree_keysKent Overstreet2014-01-089-217/+264
| | | | | | | | | | | | | | | | | | More work to disentangle various code from struct btree Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Convert btree_iter to struct btree_keysKent Overstreet2014-01-086-38/+41
| | | | | | | | | | | | | | | | | | More work to disentangle bset.c from struct btree Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Refactor bset_tree sysfs statsKent Overstreet2014-01-083-47/+54
| | | | | | | | | | | | | | | | | | | | | | | | We're in the process of turning bset.c into library code, so none of the code in that file should know about struct cache_set or struct btree - so, move the btree traversal part of the stats code to sysfs.c. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Add bch_btree_keys_u64s_remaining()Kent Overstreet2014-01-083-13/+31
| | | | | | | | | | | | | | | | | | Helper function to explicitly check how much space is free in a btree node Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Add struct btree_keysKent Overstreet2014-01-089-264/+323
| | | | | | | | | | | | | | | | | | Soon, bset.c won't need to depend on struct btree. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Abstract out stuff needed for sortingKent Overstreet2014-01-089-289/+423
| | | | | | | | | | | | Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Rename/shuffle various code aroundKent Overstreet2014-01-088-276/+341
| | | | | | | | | | | | | | | | | | More work to disentangle bset.c from the rest of the code: Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Add struct bset_sort_stateKent Overstreet2014-01-086-49/+87
| | | | | | | | | | | | | | | | | | | | | More disentangling bset.c from the rest of the bcache code - soon, the sorting routines won't have any dependencies on any outside structs. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Split out sort_extent_cmp()Kent Overstreet2014-01-084-32/+73
| | | | | | | | | | | | | | | | | | | | | Only use extent comparison for comparing extents, so we're not using START_KEY() on other key types (i.e. btree pointers) Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Bkey indexing renamingKent Overstreet2014-01-087-53/+63
| | | | | | | | | | | | | | | | | | | | | | | | | | | More refactoring: node() -> bset_bkey_idx() end() -> bset_bkey_last() Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Make bch_keylist_realloc() take u64s, not nptrsKent Overstreet2014-01-084-16/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Getting away from KEY_PTRS and moving toward KEY_U64s - and getting rid of magic 2s Also - split out the part that checks against journal entry size so as to avoid a dependancy on struct cache_set in bset.c Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Remove/fix some header dependenciesKent Overstreet2014-01-083-24/+26
| | | | | | | | | | | | | | | | | | | | | In the process of disentagling/libraryizing bset.c from the rest of the bcache code. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Use a mempool for mergesort temporary spaceKent Overstreet2014-01-083-16/+8
| | | | | | | | | | | | | | | | | | | | | It was a single element mempool before, it's slightly cleaner to just use a real mempool. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Btree verify code improvementsKent Overstreet2014-01-086-40/+83
| | | | | | | | | | | | | | | | | | | | | Used this fixed code to find and fix the bug fixed by a4d885097b0ac0cd1337f171f2d4b83e946094d4. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: kill index()Kent Overstreet2014-01-084-8/+24
| | | | | | | | | | | | | | | | | | That was a terrible name for a macro, add some better helpers to replace it. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Trivial error handling fixKent Overstreet2014-01-081-1/+2
| | | | | | | | | | | | Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache/md: Use raid stripe sizeKent Overstreet2014-01-084-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we've got code for raid5/6 stripe awareness, bcache just needs to know about the stripes and when writing partial stripes is expensive - we probably don't want to enable this optimization for raid1 or 10, even though they have stripes. So add a flag to queue_limits. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Do bkey_put() in btree_split() error pathKent Overstreet2014-01-081-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | This error path shouldn't have been hit in practice.. and we've got reworked reserve code coming soon so that it shouldn't _ever_ be bit... but if we've got code for this error path it should be correct. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Rework allocator reservesKent Overstreet2014-01-088-83/+105
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need a reserve for allocating buckets for new btree nodes - and now that we've got multiple btrees, it really needs to be per btree. This reworks the reserves so we've got separate freelists for each reserve instead of watermarks, which seems to make things a bit cleaner, and it adds some code so that btree_split() can make sure the reserve is available before it starts. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: kill closure locking codeKent Overstreet2014-01-082-313/+123
| | | | | | | | | | | | | | | | | | Also flesh out the documentation a bit Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: kill closure locking usageKent Overstreet2014-01-087-55/+98
| | | | | | | | | | | | Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Zero less memoryKent Overstreet2014-01-083-40/+41
| | | | | | | | | | | | | | | | | | Another minor performance optimization Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Don't touch bucket gen for dirty ptrsKent Overstreet2014-01-082-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | Unnecessary since a bucket that has dirty pointers pointing to it can never be invalidated - and skipping it is a measurable performance boost, since the bucket gen will usually be a cache miss. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Minor btree cache fixKent Overstreet2014-01-081-7/+3
| | | | | | | | | | | | Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Performance fix for when journal entry is fullKent Overstreet2014-01-081-5/+9
| | | | | | | | | | | | | | | | | | | | | We were unnecessarily waiting on a journal write to complete when we just needed to start a journal write and start setting up the next one. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
| * | bcache: Minor journal fixKent Overstreet2014-01-081-5/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The real fix is where we check the bytes we need against how much is remaining - we also need to check for a journal entry bigger than our buffer, we'll never write those and it would be bad if we tried to read one. Also improve the diagnostic messages. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
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