If I do the following:
open ("/tmp/file", O_CREAT|O_TRUNC|O_WR)
write (....) /* Small enough to fit in cache. */
close ()
/* Do some work, file still stays in cache. */
unlink ("/tmp/file")
Is ext2 clever enough to avoid writing data blocks for the deleted file
to the disk? This has always struck me as the reason why a Linux tmpfs
would be useful.
I could ask is ext2 clever enough to avoid writing _anything_ in this
case, but I think that's clearly asking too much.
Would a well implemented tmpfs perhaps make `gcc' faster than
`gcc -pipe'?
-- Jamie
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