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| author | Laurent Vivier <Laurent.Vivier@bull.net> | 2008-04-29 10:02:46 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 17:06:23 +0200 |
| commit | 48cf6061b30205b29b306bf9bc22dd6f0b091461 (patch) | |
| tree | bba7827177587a17160c29392651aa27aa7f98fd /include/asm-ia64/dma-mapping.h | |
| parent | edd: add default mode CONFIG_EDD_OFF=n, override with edd={on,off} (diff) | |
| download | linux-48cf6061b30205b29b306bf9bc22dd6f0b091461.tar.xz linux-48cf6061b30205b29b306bf9bc22dd6f0b091461.zip | |
NBD: allow nbd to be used locally
This patch allows Network Block Device to be mounted locally (nbd-client to
nbd-server over 127.0.0.1).
It creates a kthread to avoid the deadlock described in NBD tools
documentation. So, if nbd-client hangs waiting for pages, the kblockd thread
can continue its work and free pages.
I have tested the patch to verify that it avoids the hang that always occurs
when writing to a localhost nbd connection. I have also tested to verify that
no performance degradation results from the additional thread and queue.
Patch originally from Laurent Vivier.
Signed-off-by: Paul Clements <paul.clements@steeleye.com>
Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-ia64/dma-mapping.h')
0 files changed, 0 insertions, 0 deletions