autofs4: check kernel communication pipe is valid for write

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It is possible for an autofs mount to become catatonic (and for the daemon
communication pipe to become NULL) after a wait has been initiallized but
before the request has been sent to the daemon.  We need to check for this
before sending the request packet.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Ian Kent 2008-07-23 21:30:20 -07:00 • committed by Linus Torvalds

parent f4c7da0261

commit e64be33cca

1 changed files with 14 additions and 2 deletions

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fs/autofs4/waitq.c

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