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  • Committer: Bazaar Package Importer
  • Author(s): Martin Pitt
  • Date: 2009-03-20 12:00:13 UTC
  • Revision ID: james.westby@ubuntu.com-20090320120013-hogj7egc5mjncc5g
Tags: upstream-8.4~0cvs20090328
Import upstream version 8.4~0cvs20090328

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src/include/port/linux.h
 
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/* $PostgreSQL$ */
 
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/*
 
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 * As of July 2007, all known versions of the Linux kernel will sometimes
 
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 * return EIDRM for a shmctl() operation when EINVAL is correct (it happens
 
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 * when the low-order 15 bits of the supplied shm ID match the slot number
 
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 * assigned to a newer shmem segment).  We deal with this by assuming that
 
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 * EIDRM means EINVAL in PGSharedMemoryIsInUse().  This is reasonably safe
 
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 * since in fact Linux has no excuse for ever returning EIDRM; it doesn't
 
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 * track removed segments in a way that would allow distinguishing them from
 
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 * private ones.  But someday that code might get upgraded, and we'd have
 
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 * to have a kernel version test here.
 
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 */
 
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#define HAVE_LINUX_EIDRM_BUG