Jeremy Allison 43fbc18fdc Final fix for the bug tridge found. Only push locks onto a blocking lock ...

queue if the posix lock failed with EACCES or EAGAIN (this means another
lock conflicts). Else return an error and don't queue the request.
Jeremy.

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brlock.c

Fix for very subtle POSIX lock interaction race condition found by

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locking.c

Final fix for the bug tridge found. Only push locks onto a blocking lock

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posix.c

Prefix VFS API macros with SMB_ for consistency and to avoid problems with VFS_ macros at system side. We currently have one clash with AIX and its VFS_LOCK. Compiled and tested -- no new functionality or code, just plain rename of macros for yet-unreleased VFS API version. Needs to be done before a24 is out

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