NVMe: Handle failures differently in nvme_submit_bio_queue()

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Return -EBUSY if the queue is full or -ENOMEM if we failed to allocate
memory (or map a scatterlist).  Also use GFP_ATOMIC to allocate the
nvme_bio and move the locking to the callers of nvme_submit_bio_queue().

In nvme_make_request(), don't permit an I/O to jump the queue -- if the
congestion list already has an entry, just add to the tail, rather than
trying to submit.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

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Matthew Wilcox 2011-02-14 15:55:33 -05:00

parent 897cfe1ce7

commit eeee322647

1 changed files with 17 additions and 19 deletions

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drivers/block/nvme.c

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