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From
SubjectRe: to resize shared memory segment by using shmctl
Date
Hi,

On Mon, 6 Nov 2000, aprasad@in.ibm.com wrote:
> Hi, is it possible to change the size of a preexisting shared memory
> segment by using shmctl?
>
> AIX has comand SHM_SIZE to shmctl to resize any existing shared
> memory segment. can it be done without recreating the whole thing
> in linux?

No that's not possible in Linux. With 2.4 you can use posix shm and
use ftruncate to resize it.

Greetings
Christoph

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