summaryrefslogtreecommitdiff
AgeCommit message (Collapse)AuthorFilesLines
2016-12-05block: fix unintended fallthrough in generic_make_request_checks()Nicolai Stange1-0/+1
Since commit e73c23ff736e ("block: add async variant of blkdev_issue_zeroout") messages like the following show up: EXT4-fs (dm-1): Delayed block allocation failed for inode 2368848 at logical offset 0 with max blocks 1 with error 95 EXT4-fs (dm-1): This should not happen!! Data will be lost Due to the following fallthrough introduced with commit 2d253440b5af ("block: Define zoned block device operations"), generic_make_request_checks() would accept a REQ_OP_WRITE_SAME bio only if the block device supports "write same" *and* is a zoned one: switch (bio_op(bio)) { [...] case REQ_OP_WRITE_SAME: if (!bdev_write_same(bio->bi_bdev)) goto not_supported; case REQ_OP_ZONE_REPORT: case REQ_OP_ZONE_RESET: if (!bdev_is_zoned(bio->bi_bdev)) goto not_supported; break; [...] } Thus, although the bio setup as done by __blkdev_issue_write_same() from commit e73c23ff736e ("block: add async variant of blkdev_issue_zeroout") would succeed, its actual submission would not, resulting in the EOPNOTSUPP == 95. Fix this by removing the fallthrough which, due to the lack of an explicit comment, seems to be unintended anyway. Fixes: e73c23ff736e ("block: add async variant of blkdev_issue_zeroout") Fixes: 2d253440b5af ("block: Define zoned block device operations") Signed-off-by: Nicolai Stange <nicstange@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-03nbd: fix 64-bit divisionJens Axboe1-1/+1
We have this: ERROR: "__aeabi_ldivmod" [drivers/block/nbd.ko] undefined! ERROR: "__divdi3" [drivers/block/nbd.ko] undefined! nbd.c:(.text+0x247c72): undefined reference to `__divdi3' due to a recent commit, that did 64-bit division. Use the proper divider function so that 32-bit compiles don't break. Fixes: ef77b515243b ("nbd: use loff_t for blocksize and nbd_set_size args") Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-03nbd: use loff_t for blocksize and nbd_set_size argsJosef Bacik1-4/+4
If we have large devices (say like the 40t drive I was trying to test with) we will end up overflowing the int arguments to nbd_set_size and not get the right size for our device. Fix this by using loff_t everywhere so I don't have to think about this again. Thanks, Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-03blk-stat: fix a typoShaohua Li1-1/+1
Signed-off-by: Shaohua Li <shli@fb.com> Fixes: cf43e6be865a ("block: add scalable completion tracking of requests") Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-01block: factor out req_set_nomergeRitesh Harjani1-9/+10
Factor out common code for setting REQ_NOMERGE flag which is being used out at certain places and make it a helper instead, req_set_nomerge(). Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> Get rid of the inline. Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-01block: protect iterate_bdevs() against concurrent closeRabin Vincent1-1/+6
If a block device is closed while iterate_bdevs() is handling it, the following NULL pointer dereference occurs because bdev->b_disk is NULL in bdev_get_queue(), which is called from blk_get_backing_dev_info() (in turn called by the mapping_cap_writeback_dirty() call in __filemap_fdatawrite_range()): BUG: unable to handle kernel NULL pointer dereference at 0000000000000508 IP: [<ffffffff81314790>] blk_get_backing_dev_info+0x10/0x20 PGD 9e62067 PUD 9ee8067 PMD 0 Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC Modules linked in: CPU: 1 PID: 2422 Comm: sync Not tainted 4.5.0-rc7+ #400 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) task: ffff880009f4d700 ti: ffff880009f5c000 task.ti: ffff880009f5c000 RIP: 0010:[<ffffffff81314790>] [<ffffffff81314790>] blk_get_backing_dev_info+0x10/0x20 RSP: 0018:ffff880009f5fe68 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88000ec17a38 RCX: ffffffff81a4e940 RDX: 7fffffffffffffff RSI: 0000000000000000 RDI: ffff88000ec176c0 RBP: ffff880009f5fe68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88000ec17860 R13: ffffffff811b25c0 R14: ffff88000ec178e0 R15: ffff88000ec17a38 FS: 00007faee505d700(0000) GS:ffff88000fb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000508 CR3: 0000000009e8a000 CR4: 00000000000006e0 Stack: ffff880009f5feb8 ffffffff8112e7f5 0000000000000000 7fffffffffffffff 0000000000000000 0000000000000000 7fffffffffffffff 0000000000000001 ffff88000ec178e0 ffff88000ec17860 ffff880009f5fec8 ffffffff8112e81f Call Trace: [<ffffffff8112e7f5>] __filemap_fdatawrite_range+0x85/0x90 [<ffffffff8112e81f>] filemap_fdatawrite+0x1f/0x30 [<ffffffff811b25d6>] fdatawrite_one_bdev+0x16/0x20 [<ffffffff811bc402>] iterate_bdevs+0xf2/0x130 [<ffffffff811b2763>] sys_sync+0x63/0x90 [<ffffffff815d4272>] entry_SYSCALL_64_fastpath+0x12/0x76 Code: 0f 1f 44 00 00 48 8b 87 f0 00 00 00 55 48 89 e5 <48> 8b 80 08 05 00 00 5d RIP [<ffffffff81314790>] blk_get_backing_dev_info+0x10/0x20 RSP <ffff880009f5fe68> CR2: 0000000000000508 ---[ end trace 2487336ceb3de62d ]--- The crash is easily reproducible by running the following command, if an msleep(100) is inserted before the call to func() in iterate_devs(): while :; do head -c1 /dev/nullb0; done > /dev/null & while :; do sync; done Fix it by holding the bd_mutex across the func() call and only calling func() if the bdev is opened. Cc: stable@vger.kernel.org Fixes: 5c0d6b60a0ba ("vfs: Create function for iterating over block devices") Reported-and-tested-by: Wei Fang <fangwei1@huawei.com> Signed-off-by: Rabin Vincent <rabinv@axis.com> Signed-off-by: Jan Kara <jack@suse.cz> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-01block: mtip32xx: set error code on failurePan Bian1-1/+3
Fix bug https://bugzilla.kernel.org/show_bug.cgi?id=188531. In function mtip_block_initialize(), variable rv takes the return value, and its value should be negative on errors. rv is initialized as 0 and is not reset when the call to ida_pre_get() fails. So 0 may be returned. The return value 0 indicates that there is no error, which may be inconsistent with the execution status. This patch fixes the bug by explicitly assigning -ENOMEM to rv on the branch that ida_pre_get() fails. Signed-off-by: Pan Bian <bianpan2016@163.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-01nvmet: add support for the Write Zeroes commandChaitanya Kulkarni2-1/+31
Add support for handling write zeroes command on target. Call into __blkdev_issue_zeroout, which the block layer expands into the best suitable variant of zeroing the LBAs. Allow write zeroes operation to deallocate the LBAs when calling __blkdev_issue_zeroout. Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@hgst.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-01nvme: add support for the Write Zeroes commandChaitanya Kulkarni1-0/+21
Allow write zeroes operations (REQ_OP_WRITE_ZEROES) on the block device, if the device supports optional command bit set for write zeroes. Add support to setup write zeroes command. Set maximum possible write zeroes sectors in one write zeroes command according to nvme write zeroes command definition. Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@hgst.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-01nvme.h: add Write Zeroes definitionsChaitanya Kulkarni1-0/+20
Add the command structure, optional command set support (ONCS) bit and a new error code for the Write Zeroes command. Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@hgst.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-01block: add support for REQ_OP_WRITE_ZEROESChaitanya Kulkarni11-19/+153
This adds a new block layer operation to zero out a range of LBAs. This allows to implement zeroing for devices that don't use either discard with a predictable zero pattern or WRITE SAME of zeroes. The prominent example of that is NVMe with the Write Zeroes command, but in the future, this should also help with improving the way zeroing discards work. For this operation, suitable entry is exported in sysfs which indicate the number of maximum bytes allowed in one write zeroes operation by the device. Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@hgst.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-01block: add async variant of blkdev_issue_zerooutChaitanya Kulkarni2-34/+84
Similar to __blkdev_issue_discard this variant allows submitting the final bio asynchronously and chaining multiple ranges into a single completion. Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@hgst.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-01block: Check partition alignment on zoned block devicesDamien Le Moal1-0/+65
Both blkdev_report_zones and blkdev_reset_zones can operate on a partition of a zoned block device. However, the first and last zones reported for a partition make sense only if the partition start sector and size are aligned on the device zone size. The same applies for zone reset. Resetting the first or the last zone of a partition straddling zones may impact neighboring partitions. Finally, if a partition start sector is not at the beginning of a sequential zone, it will be impossible to write to the first sectors of the partition on a host-managed device. Avoid all these problems and incoherencies by ignoring partitions that are not zone aligned. Note: Even with CONFIG_BLK_DEV_ZONED disabled, bdev_is_zoned() will report the correct disk zoning type (host-aware, host-managed or none) but bdev_zone_size() will always return 0 for zoned block devices (i.e. the zone size is unknown). So test this as a way to ensure that a zoned block device is being handled as such. As a result, for a host-aware devices, unaligned zone partitions will be accepted with CONFIG_BLK_DEV_ZONED disabled. That is, the disk will be treated as a regular block device (as it should). If zoned block device support is enabled, only aligned partitions will be accepted. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: transform target get/set bad blockJavier González4-11/+85
Since targets are given a virtual target device, it is necessary to translate all communication between targets and the backend device. Implement the translation layer for get/set bad block table. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: use target nvm on target-specific ops.Javier González4-16/+21
On target-specific operations pass on nvm_tgt_dev instead of the generic nvm device. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: introduce max_phys_sects helper functionJavier González2-0/+9
Target devices do not have access to the device driver operations. Introduce a helper function that exposes the max. number of physical sectors supported by the underlying device. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: introduce helpers for generic ops in rrpcJavier González4-19/+35
Avoid calling media manager and device-specific operations directly from rrpc. Create helper functions on lightnvm's core instead. Signed-off-by: Javier González <javier@cnexlabs.com> Made it work with null_blk as well. Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: eliminate nvm_lun abstraction in mmJavier González7-164/+419
In order to naturally support multi-target instances on an Open-Channel SSD, targets should own the LUNs they get blocks from and manage provisioning internally. This is done in several steps. Since targets own the LUNs the are instantiated on top of and manage the free block list internally, there is no need for a LUN abstraction in the media manager. LUNs are intrinsically managed as in the physical layout (ch:0,lun:0, ..., ch:0,lun:n, ch:1,lun:0, ch:1,lun:n, ..., ch:m,lun:0, ch:m,lun:n) and given to the targets based on the target creation ioctl. This simplifies LUN management and clears the path for a partition manager to sit directly underneath LightNVM targets. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: eliminate nvm_block abstraction on mmJavier González5-329/+191
In order to naturally support multi-target instances on an Open-Channel SSD, targets should own the LUNs they get blocks from and manage provisioning internally. This is done in several steps. A part of this transformation is that targets manage their blocks internally. This patch eliminates the nvm_block abstraction and moves block management to the target logic. The rrpc target is transformed. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: remove debug lun statistics from gennvmJavier González2-24/+0
Since LUNs are managed internally on targets, the media manager has no access to the free LUN lists. Thus, debug functions that show LUN information on the device should not be implemented on the media manager, but rather on the target in itself. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: remove get_lun operation on gennvmJavier González3-30/+14
Since LUNs are managed internally on the target, there is no need for the media manager to implement a get_lun operation. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: move block provisioning to targetsJavier González7-291/+371
In order to naturally support multi-target instances on an Open-Channel SSD, targets should own the LUNs they get blocks from and manage provisioning internally. This is done in several steps. This patch moves the block provisioning inside of the target and removes the get/put block interface from the media manager. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: manage lun partitions internally in mmJavier González3-24/+51
LUNs are exclusively owned by targets implementing a block device FTL. Doing this reservation requires at the moment a 2-way callback gennvm <-> target. The reason behind this is that LUNs were not assumed to always be exclusively owned by targets. However, this design decision goes against I/O determinism QoS (two targets would mix I/O on the same parallel unit in the device). This patch makes LUN reservation as part of the target creation on the media manager. This makes that LUNs are always exclusively owned by the target instantiated on top of them. LUN stripping and/or sharing should be implemented on the target itself or the layers on top. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: remove gen_lun abstractionJavier González3-58/+53
The gen_lun abstraction in the generic media manager was conceived on the assumption that a single target would instantiated on top of it. This has complicated target design to implement multi-instances. Remove this abstraction and move its logic to nvm_lun, which manages physical lun geometry and operations. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: use constant name instead of valueJavier González1-1/+1
There is a constant to refer to free blocks. Use it when marking bad blocks instead of using a constant value Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: remove unnecessary variables in rrpcJavier González2-9/+0
Before vectored I/Os were supported on rrpc, the physical address was stored as part of the nvm_rqd request. This variable become obsolete when the ppa_list was introduced. Cleanup this variable. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: make address conversion functions globalJavier González2-30/+30
Targets are assumed to used the same generic ppa format, where the address is partitioned on ch:lun:block:pg:pl:sec. Thus, make the function in charge of transforming the ppa address from a linear format to the generic one available to all targets. This function will be needed by the media manager in order to do target mapping translations when targets are divided on different physical partitions. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: cleanup unused target operationsJavier González1-6/+0
Cleanup definition leftovers from old gennvm interface Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: remove sysfs configuration interfaceJavier González1-134/+0
LightNVM used to be managed and configured through sysfs. Since the introduction of management ioctls this interface is redundant and outdated. Get rid of it. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: rrpc: split bios of size > 256kbJavier González1-0/+2
rrpc cannot handle bios of size > 256kb due to NVMe using a 64 bit bitmap to signal I/O completion. If a larger bio comes, split it explicitly. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: add ECC error codesJavier González1-0/+2
Add ECC error codes to enable the appropriate handling in the target. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: export set bad block tableJavier González5-50/+77
Bad blocks should be managed by block owners. This would be either targets for data blocks or sysblk for system blocks. In order to support this, export two functions: One to mark a block as an specific type (e.g., bad block) and another to update the bad block table on the device. Move bad block management to rrpc. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: do not protect block 0Javier González1-6/+0
Device blocks should be marked by the device and considered as bad blocks by the media manager. Thus, do not make assumptions on which blocks are going to be used by the device. In doing so we might lose valid blocks from the free list. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29lightnvm: enable to send hint to erase commandJavier González6-13/+15
Erases might be subject to host hints. An example is multi-plane programming to erase blocks in parallel. Enable targets to specify this hint. Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29nvme: lightnvm: attach lightnvm sysfs to nvme block deviceMatias Bjørling8-298/+197
Previously, LBA read and write were not supported in the lightnvm specification. Now that it supports it, lets use the traditional NVMe gendisk, and attach the lightnvm sysfs geometry export. Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29nvme: lightnvm: frees wrong cmd structureMatias Bjørling1-1/+1
When struct nvme_request was introduced, the nvme_nvm_submit_io was converted to the new interface. The interface moves nvme_nvm_command data structure into the struct request pdu. On io completion, rq->cmd is freed, which should have been the dereferenced pdu nvme_request->cmd. Fixes: d49187e97e94 "nvme: introduce struct nvme_request" Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-29blk-mq: Drop explicit timeout sync in hotplugGabriel Krisman Bertazi1-8/+1
After commit 287922eb0b18 ("block: defer timeouts to a workqueue"), deleting the timeout work after freezing the queue shouldn't be necessary, since the synchronization is already enforced by the acquisition of a q_usage_counter reference in blk_mq_timeout_work. Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> Reviewed-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-28blk-wbt: allow wbt to be enabled always through sysfsJens Axboe3-7/+29
Currently there's no way to enable wbt if it's not enabled in the kernel config by default for a device. Allow a write to the 'wbt_lat_usec' queue sysfs file to enable wbt. This is useful for both the kernel config case, but also if the device is CFQ managed and it was turned off by default. Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-28blk-wbt: cleanup disable-by-default for CFQJens Axboe3-10/+13
Make it clear that we are disabling wbt for the specified queued, if it was enabled by default. This is in preparation for allowing users to re-enable wbt, and not have it disabled automatically again. Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-28blk-wbt: allow reset of default latency through sysfsJens Axboe4-12/+37
Allow a write of '-1' to reset the default latency target for a given device. This removes knowledge of the different default settings for rotational vs non-rotational from user space. Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-23nbd: fix setting of 'error' in NBD_DO_IT ioctlJens Axboe1-2/+5
Multiple paths don't set it properly, ensure that we do. Fixes: 9561a7ade0c2 ("nbd: add multi-connection support") Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-22nbd: move multi-connection bit to unused valueJens Axboe1-1/+1
Bit #7 is already used, move to bit #8 which is the first unused one. Fixes: 9561a7ade0c2 ("nbd: add multi-connection support") Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-22nbd: add multi-connection supportJosef Bacik2-148/+243
NBD can become contended on its single connection. We have to serialize all writes and we can only process one read response at a time. Fix this by allowing userspace to provide multiple connections to a single nbd device. This coupled with block-mq drastically increases performance in multi-process cases. Thanks, Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-22block,blkcg: use __GFP_NOWARN for best-effort allocations in blkcgTejun Heo2-5/+7
blkcg allocates some per-cgroup data structures with GFP_NOWAIT and when that fails falls back to operations which aren't specific to the cgroup. Occassional failures are expected under pressure and falling back to non-cgroup operation is the right thing to do. Unfortunately, I forgot to add __GFP_NOWARN to these allocations and these expected failures end up creating a lot of noise. Add __GFP_NOWARN. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Marc MERLIN <marc@merlins.org> Reported-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-22fs: logfs: remove unnecesary checkMing Lei1-1/+0
The check on bio->bi_vcnt doesn't make sense in erase_end_io(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-22fs: logfs: use bio_add_page() in do_erase()Ming Lei1-29/+15
Also code gets simplified a bit. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-22fs: logfs: use bio_add_page() in __bdev_writeseg()Ming Lei1-31/+20
Also this patch simplify the code a bit. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-22fs: logfs: convert to bio_add_page() in sync_request()Ming Lei1-5/+1
Always bio_add_page() is the standard and preferred way to do the task. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ming Lei <tom.leiming@gmail.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-22bcache: debug: avoid accessing .bi_io_vec directlyMing Lei1-3/+8
Instead we use standard iterator way to do that. Signed-off-by: Ming Lei <tom.leiming@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-22target: avoid accessing .bi_vcnt directlyMing Lei1-6/+2
When the bio is full, bio_add_pc_page() will return zero, so use this information tell when the bio is full. Also replace access to .bi_vcnt for pr_debug() with bio_segments(). Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ming Lei <tom.leiming@gmail.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@fb.com>
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-17 18:22:40 +0300