- 16 May, 2018 8 commits
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Josef Bacik authored
We need to make sure we don't just set the size of the bdev to 0 while it's being used by a file system. We have the appropriate check in nbd_bdev_reset, simply use that helper instead. Signed-off-by:
Josef Bacik <jbacik@fb.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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Josef Bacik authored
bd_invalidated is kind of a pain wrt partitions as it really only triggers the partition rescan if it is set after bd_ops->open() runs, so setting it when we reset the device isn't useful. We also sporadically would still have partitions left over in some disconnect cases, so fix this by always setting bd_invalidated on open if there's no configuration or if we've had a disconnect action happen, that way the partition table gets invalidated and rescanned properly. Signed-off-by:
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Josef Bacik authored
This is what the ioctl based nbd disconnect does as well. Without this the device will just sit there and wait for the connection to go away (or IO to occur) before the device gets torn down. Instead clear everything up on our end so the configuration goes away as quickly as possible. Signed-off-by:
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Josef Bacik authored
When we stopped relying on the bdev everywhere I broke updating the block device size on the fly, which ceph relies on. We can't just do set_capacity, we also have to do bd_set_size so things like parted will notice the device size change. Fixes: 29eaadc0 ("nbd: stop using the bdev everywhere") cc: stable@vger.kernel.org Signed-off-by:
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Josef Bacik authored
I messed up changing the size of an NBD device while it was connected by not actually updating the device or doing the uevent. Fix this by updating everything if we're connected and we change the size. cc: stable@vger.kernel.org Fixes: 639812a1 ("nbd: don't set the device size until we're connected") Signed-off-by:
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Josef Bacik authored
This fixes a use after free bug, we shouldn't be doing disk->queue right after we do del_gendisk(disk). Save the queue and do the cleanup after the del_gendisk. Fixes: c6a4759e ("nbd: add device refcounting") cc: stable@vger.kernel.org Signed-off-by:
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Josef Bacik authored
I've been missing stuff because it's been going into my work email which is a black hole. Update to the email I actually use so I stop missing patches and bug reports. Signed-off-by:
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huhai authored
We can use blk_mq_sched_insert_request() even if we don't have an IO scheduler attached, since that case will end up being exactly the same as what blk_mq_queue_io() was doing now. Signed-off-by:
huhai <huhai@kylinos.cn> Signed-off-by:
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- 15 May, 2018 1 commit
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Jens Axboe authored
Nobody is using it anymore, and it's been abandoned. Since David is fine with removing it, kill it. Suggested-by:
Christoph Hellwig <hch@lst.de> Acked-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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- 14 May, 2018 18 commits
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Kent Overstreet authored
Signed-off-by:
Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by:
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Kent Overstreet authored
Signed-off-by:
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Kent Overstreet authored
Recently found a bug where a driver left bi_next not NULL and then called bio_endio(), and then the submitter of the bio used bio_copy_data() which was treating src and dst as lists of bios. Fixed that bug by splitting out bio_list_copy_data(), but in case other things are depending on bi_next in weird ways, add a warning to help avoid more bugs like that in the future. Signed-off-by:
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Kent Overstreet authored
Since a bio can point to userspace pages (e.g. direct IO), this is generally necessary. Signed-off-by:
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Kent Overstreet authored
Found a bug (with ASAN) where we were passing a bio to bio_copy_data() with bi_next not NULL, when it should have been - a driver had left bi_next set to something after calling bio_endio(). Since the normal case is only copying single bios, split out bio_list_copy_data() to avoid more bugs like this in the future. Signed-off-by:
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Kent Overstreet authored
Add versions that take bvec_iter args instead of using bio->bi_iter - to be used by bcachefs. Signed-off-by:
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Kent Overstreet authored
Minor optimization - remove a pointer indirection when using fs_bio_set. Signed-off-by:
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Kent Overstreet authored
Similarly to mempool_init()/mempool_exit(), take a pointer indirection out of allocation/freeing by allowing biosets to be embedded in other structs. Signed-off-by:
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Kent Overstreet authored
Minor performance improvement by getting rid of pointer indirections from allocation/freeing fastpaths. Signed-off-by:
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Kent Overstreet authored
Allows mempools to be embedded in other structs, getting rid of a pointer indirection from allocation fastpaths. mempool_exit() is safe to call on an uninitialized but zeroed mempool. Signed-off-by:
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Jens Axboe authored
If we have multiple callers of sbq_wake_up(), we can end up in a situation where the wait_cnt will continually go more and more negative. Consider the case where our wake batch is 1, hence wait_cnt will start out as 1. wait_cnt == 1 CPU0 CPU1 atomic_dec_return(), cnt == 0 atomic_dec_return(), cnt == -1 cmpxchg(-1, 0) (succeeds) [wait_cnt now 0] cmpxchg(0, 1) (fails) This ends up with wait_cnt being 0, we'll wakeup immediately next time. Going through the same loop as above again, and we'll have wait_cnt -1. For the case where we have a larger wake batch, the only difference is that the starting point will be higher. We'll still end up with continually smaller batch wakeups, which defeats the purpose of the rolling wakeups. Always reset the wait_cnt to the batch value. Then it doesn't matter who wins the race. But ensure that whomever does win the race is the one that increments the ws index and wakes up our batch count, loser gets to call __sbq_wake_up() again to account his wakeups towards the next active wait state index. Fixes: 6c0ca7ae ("sbitmap: fix wakeup hang after sbq resize") Reviewed-by:
Omar Sandoval <osandov@fb.com> Signed-off-by:
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Christoph Hellwig authored
Same numerical value (for now at least), but a much better documentation of intent. Signed-off-by:
Hannes Reinecke <hare@suse.com> Signed-off-by:
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Christoph Hellwig authored
We just can't do I/O when doing block layer requests allocations, so use GFP_NOIO instead of the even more limited __GFP_DIRECT_RECLAIM. Signed-off-by:
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Christoph Hellwig authored
blk_old_get_request already has it at hand, and in blk_queue_bio, which is the fast path, it is constant. Signed-off-by:
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Christoph Hellwig authored
Switch everyone to blk_get_request_flags, and then rename blk_get_request_flags to blk_get_request. Signed-off-by:
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Christoph Hellwig authored
Signed-off-by:
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Christoph Hellwig authored
Always GFP_KERNEL, and keeping it would cause serious complications for the next change. Signed-off-by:
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Christoph Hellwig authored
Fixes: 7c2d748e ("memstick: don't call blk_queue_bounce_limit") Reported-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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- 11 May, 2018 7 commits
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Christoph Hellwig authored
The ps3disk driver already kmaps all pages when copying from/to the internal bounce buffer, so it can accept highmem pages just fine. Signed-off-by:
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Christoph Hellwig authored
Just kmap the bio single page payload before processing it. (and yes, now highmem on sparc32 anyway, but kmap_(un)map atomic are nops, so this gives the right example) Signed-off-by:
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Christoph Hellwig authored
Use kmap_atomic when copying out of a bio_vec. Signed-off-by:
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Christoph Hellwig authored
Just kmap the single payload page before passing it on to the FTL. Signed-off-by:
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Christoph Hellwig authored
All in-tree host drivers set up a proper dma mask and use the dma-mapping helpers. This means they will be able to deal with any address that we are throwing at them. Signed-off-by:
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Christoph Hellwig authored
DAC960 just sets the block bounce limit to the dma mask, which means that the iommu or swiotlb already take care of the bounce buffering, and the block bouncing can be removed. Reviewed-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
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Christoph Hellwig authored
mtip32xx just sets the block bounce limit to the dma mask, which means that the iommu or swiotlb already take care of the bounce buffering, and the block bouncing can be removed. Reviewed-by:
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- 10 May, 2018 6 commits
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Omar Sandoval authored
Make sure the user passed the right value to sbitmap_queue_min_shallow_depth(). Acked-by:
Paolo Valente <paolo.valente@linaro.org> Signed-off-by:
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Jens Axboe authored
We don't expect the async depth to be smaller than the wake batch count for sbitmap, but just in case, inform sbitmap of what shallow depth kyber may use. Acked-by:
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Jens Axboe authored
If our shallow depth is smaller than the wake batching of sbitmap, we can introduce hangs. Ensure that sbitmap knows how low we'll go. Acked-by:
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Omar Sandoval authored
The sbitmap queue wake batch is calculated such that once allocations start blocking, all of the bits which are already allocated must be enough to fulfill the batch counters of all of the waitqueues. However, the shallow allocation depth can break this invariant, since we block before our full depth is being utilized. Add sbitmap_queue_min_shallow_depth(), which saves the minimum shallow depth the sbq will use, and update sbq_calc_wake_batch() to take it into account. Acked-by:
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Jens Axboe authored
bfqd->sb_shift was attempted used as a cache for the sbitmap queue shift, but we don't need it, as it never changes. Kill it with fire. Acked-by:
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Jens Axboe authored
It doesn't change, so don't put it in the per-IO hot path. Acked-by:
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