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| author |   Jens Axboe <jens.axboe@oracle.com> | 2010-05-19 21:03:16 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2010-05-21 21:12:52 +0200 |
| commit | b492e95be0ae672922f4734acf3f5d35c30be948 (patch) | |
| tree | a8a1e7f035903796e6b8f626add8d269bf989a35 /block | |
| parent | pipe: add support for shrinking and growing pipes (diff) | |
| download | linux-dev-b492e95be0ae672922f4734acf3f5d35c30be948.tar.xz linux-dev-b492e95be0ae672922f4734acf3f5d35c30be948.zip | |
pipe: set lower and upper limit on max pages in the pipe page array
We need at least two to guarantee proper POSIX behaviour, so
never allow a smaller limit than that.
Also expose a /proc/sys/fs/pipe-max-pages sysctl file that allows
root to define a sane upper limit. Make it default to 16 times the
default size, which is 16 pages.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
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