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authorJens Axboe <jens.axboe@oracle.com>2010-05-19 21:03:16 +0200
committerJens Axboe <jens.axboe@oracle.com>2010-05-21 21:12:52 +0200
commitb492e95be0ae672922f4734acf3f5d35c30be948 (patch)
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parent35f3d14dbbc58447c61e38a162ea10add6b31dc7 (diff)
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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>
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