src/include/linux/blkdev_compat.h, branch zfs-0.7.0-rc2

Fix lookup_bdev() on Ubuntu

2016-10-26T17:30:43Z

Ubuntu added support for checking inode permissions to lookup_bdev() in kernel commit 193fb6a2c94fab8eb8ce70a5da4d21c7d4023bee (merged in 4.4.0-6.21). Upstream bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1636517 This patch adds a test for Ubuntu's variant of lookup_bdev() to configure and calls the function in the correct way. Reviewed-by: Brian Behlendorf Signed-off-by: Hajo Möller Closes #5336

Reorder HAVE_BIO_RW_* checks

2016-08-12T16:17:40Z

The HAVE_BIO_RW_* #ifdef's must appear before REQ_* #ifdef's in the bio_is_flush() and bio_is_discard() macros. Linux 2.6.32 era kernels defined both of values and the HAVE_BIO_RW_* must be used in this case. This resulted in a panic in zconfig test 5. Signed-off-by: Brian Behlendorf Signed-off-by: Chunwei Chen Closes #4951 Closes #4959

Linux 4.8 compat: Fix removal of bio->bi_rw member

2016-08-11T18:19:34Z

All users of bio->bi_rw have been replaced with compatibility wrappers. This allows the kernel specific logic to be abstracted away, and for each of the supported cases to be documented with the wrapper. The updated interfaces are as follows: * void blk_queue_set_write_cache(struct request_queue *, bool, bool) * boolean_t bio_is_flush(struct bio *) * boolean_t bio_is_fua(struct bio *) * boolean_t bio_is_discard(struct bio *) * boolean_t bio_is_secure_erase(struct bio *) * VDEV_WRITE_FLUSH_FUA Signed-off-by: Brian Behlendorf Signed-off-by: Chunwei Chen Closes #4951

Linux 4.8 compat: REQ_OP and bio_set_op_attrs()

2016-07-29T21:48:19Z

New REQ_OP_* definitions have been introduced to separate the WRITE, READ, and DISCARD operations from the flags. This included changing the encoding of bi_rw. It places REQ_OP_* in high order bits and other stuff in low order bits. This encoding is done through the new helper function bio_set_op_attrs. For complete details refer to: https://github.com/torvalds/linux/commit/f215082 https://github.com/torvalds/linux/commit/4e1b2d5 Signed-off-by: Tim Chase Signed-off-by: Chunwei Chen Signed-off-by: Brian Behlendorf Closes #4892 Closes #4899

Linux 4.8 compat: REQ_PREFLUSH

2016-07-29T21:48:09Z

The REQ_FLUSH flag was renamed REQ_PREFLUSH to avoid confusion with REQ_OP_FLUSH. See https://github.com/torvalds/linux/commit/28a8f0d3 for complete details. Signed-off-by: Tim Chase Signed-off-by: Chunwei Chen Signed-off-by: Brian Behlendorf Issue #4892 Issue #4899

Linux 4.7 compat: replace blk_queue_flush with blk_queue_write_cache

2016-05-20T18:08:55Z

Signed-off-by: Chunwei Chen Signed-off-by: Brian Behlendorf Issue #4665

Use uio for zvol_{read,write}

2015-12-16T00:21:43Z

Since uio now supports bvec, we can convert bio into uio and reuse dmu_{read,write}_uio. This way, we can remove some duplicate code. Signed-off-by: Chunwei Chen Signed-off-by: Brian Behlendorf Closes #4078

Linux 4.3 compat: bio_end_io_t / BIO_UPTODATE

2015-09-25T19:44:54Z

Commit torvalds/linux@4246a0b63bd8f56a1469b12eafeb875b1041a451 ("block: add a bi_error field to struct bio") dropped the error argument from bio_endio in favor of newly introduced bio->bi_error. This also replaces bio->bi_flags value BIO_UPTODATE. bio_endio was a 3 argument function until Linux 2.6.24, which made it a 2 argument function, and now the prototype has changed yet again to a 1 argument function. Support for pre 2.6.24 kernels was already dropped with 37f9dac592bf ("zvol processing should use struct bio") which assumed the 2 argument version in zvol_request(). Remaining code to support the 3 argument version is hereby removed. Signed-off-by: Brian Behlendorf Signed-off-by: Lukas Wunner Issue #3799

Reintroduce IO accounting on zvols on Linux 3.19+

2015-09-09T16:29:24Z

zfsonlinux/zfs@e20cd6f7a8922709b1aa2ecefd783390102d79e0 caused us to lose IO accounting on zvols. When I originally wrote that last year, the symbols we needed to maintain IO accounting were GPL exported, but torvalds/linux@394ffa503bc40e32d7f54a9b817264e81ce131b4 provided suitable symbols for restoring this functionality 4 months later. We can call them to restore the IO accounting on Linux 3.19 and later as well as any older kernels where that patch is backported. Signed-off-by: Richard Yao Signed-off-by: Brian Behlendorf Closes #3741

Remove blk_rq_bytes()/blk_rq_sectors autotools checks

2015-09-04T19:37:24Z

Signed-off-by: Richard Yao