blob: 0f4432a4eff265ee2983c9c21165ed1ffd397c69 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
|
/* $PostgreSQL: pgsql/src/include/port/linux.h,v 1.44 2007/11/15 21:14:44 momjian Exp $ */
/*
* As of July 2007, all known versions of the Linux kernel will sometimes
* return EIDRM for a shmctl() operation when EINVAL is correct (it happens
* when the low-order 15 bits of the supplied shm ID match the slot number
* assigned to a newer shmem segment). We deal with this by assuming that
* EIDRM means EINVAL in PGSharedMemoryIsInUse(). This is reasonably safe
* since in fact Linux has no excuse for ever returning EIDRM; it doesn't
* track removed segments in a way that would allow distinguishing them from
* private ones. But someday that code might get upgraded, and we'd have
* to have a kernel version test here.
*/
#define HAVE_LINUX_EIDRM_BUG
|
