Hello!

If I open one file a lot of times using the flag O_DIRECT,
memory seems to be be lost and never given back to the system.
This is happening on some kernels, see below for which ones I tried.

Attached program will produce this behavior, also attached 
is the output from vmstat while running the program.

Affected:
2.4.22
2.4.22-ac4
2.4.23-pre6

Not affected:
2.4.22-aa1
2.6.0-test6

/Magnus