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Linux 5.7 compat: blk_alloc_queue()

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Commit https://github.com/torvalds/linux/commit/3d745ea5 simplified
the blk_alloc_queue() interface by updating it to take the request
queue as an argument.  Add a wrapper function which accepts the new
arguments and internally uses the available interfaces.

Other minor changes include increasing the Linux-Maximum to 5.6 now
that 5.6 has been released.  It was not bumped to 5.7 because this
release has not yet been finalized and is still subject to change.

Added local 'struct zvol_state_os *zso' variable to zvol_alloc.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #10181
Closes #10187
This commit is contained in:
Brian Behlendorf
2020-04-09 09:16:46 -07:00
committed by Tony Hutter
parent ea15efd4c9
commit e6142ac0f2
4 changed files with 57 additions and 11 deletions
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module/zfs/zvol.c
+1 -2
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@@ -1703,11 +1703,10 @@ zvol_alloc(dev_t dev, const char *name)
mutex_init(&zv->zv_state_lock, NULL, MUTEX_DEFAULT, NULL);
zv->zv_queue = blk_alloc_queue(GFP_ATOMIC);
zv->zv_queue = blk_generic_alloc_queue(zvol_request, NUMA_NO_NODE);
if (zv->zv_queue == NULL)
goto out_kmem;
blk_queue_make_request(zv->zv_queue, zvol_request);
blk_queue_set_write_cache(zv->zv_queue, B_TRUE, B_TRUE);
/* Limit read-ahead to a single page to prevent over-prefetching. */