Messages in this thread | | | From | Christoph Rohland <> | Subject | Re: ramdisk/tmpfs/ramfs/memfs ? | Date | 27 Apr 2001 17:38:19 +0200 |
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Hi Padraig,
On Fri, 27 Apr 2001, Padraig Brady wrote: > I don't have swap so don't need tmpfs, but could probably > use it anyway without a backing store?
Yes, it does not need backing store.
> Anyway why was ramfs created if tmpfs existed, unless tmpfs requires > backing store? They both seem to have been written around the same > time?
- shm fs was written as a specialized fs to implement POSIX shared memory based on SYSV shm. - ramfs was introduced shortly after shm fs and was meant as a programming example for a minimal virtual filesystem. - Later shm fs was redone to use the same methods like ramfs but still was only useable for shared memory. - After the release of 2.4.0, I extended shm fs to support read/write and thus be tmpfs and since then it can replace ramfs.
Greetings Christoph
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