K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2020-01-22T01:08:27.788385Z
K 7
svn:log
V 480
MFC r356474, r356480, r356482, r356506:
Add Host Memory Buffer support to nvme(4).

This allows cheapest DRAM-less NVMe SSDs to use some of host RAM (about
1MB per 1GB on the devices I have) for its metadata cache, significantly
improving random I/O performance.  Device reports minimal and preferable
size of the buffer.  The code limits it to 5% of physical RAM by default.
If the buffer can not be allocated or below minimal size, the device will
just have to work without it.

END