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authorSebastian Andrzej Siewior <sebastian@breakpoint.cc>2014-01-18 21:24:58 +0100
committerJason A. Donenfeld <Jason@zx2c4.com>2014-01-19 15:08:49 +0100
commitd3581b58890389794de5d5222c91a0129873e95c (patch)
tree95c4010b61869934cca86c5ac23056463754f2ee /COPYING
parentea7210bef377be4ffb088a1a8e5a9dd354f82afb (diff)
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cache: use sendfile() instead of a pair of read() + write()
sendfile() does the same job and avoids to copy the content into userland and back. One has to define NO_SENDFILE in case the OS (kernel / libc) does not supported. It is disabled by default on non-linux environemnts. According to the glibc, sendfile64() was added in Linux 2.4 (so it has been there for a while) but after browsing over the mapage of FreeBSD's I noticed that the prototype is little different. Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
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