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authorPavel Machek <pavel@suse.cz>2009-01-15 13:51:03 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-15 16:39:38 -0800
commitc91192d66d6cea7878b8542c9d9f1873971aba92 (patch)
tree954adf09a2d6f4028aa8c3a842aa07235e3d4be5 /scripts/checkpatch.pl
parent1bcbf31337391a2f54ef6c1e8871c2de5944a7dc (diff)
nbd: do not allow two clients at the same time
Two nbd-clients at same time are bad idea, and cause WARN_ON from nbd in 2.6.28-rc7 from sysfs_add_one. This simply prevents that from happening. To reproduce: cat /dev/zero | head -c 10000000 > /tmp/delme.fstest.fs nbd-server 9100 -l /anyone.can.connect > /tmp/delme.fstest.fs & sleep 1 nbd-client localhost 9100 /dev/nd0 & nbd-client localhost 9100 /dev/nd0 & Signed-off-by: Pavel Machek <pavel@suse.cz> Acked-by: Paul Clements <paul.clements@steeleye.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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