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authorRob Landley <rob@landley.net>2006-08-17 19:07:20 +0000
committerRob Landley <rob@landley.net>2006-08-17 19:07:20 +0000
commit4470b74e29f98ffdd39acf8085e5b7cd0758edaa (patch)
treebf8214dbd36de26f10c48bd2f2811aab6eebc643 /libbb/wfopen_input.c
parenteb28ce46448e280742465d027e86701766c34d97 (diff)
downloadbusybox-4470b74e29f98ffdd39acf8085e5b7cd0758edaa.tar.gz
The kernel can't handle umount /dev/hdc, we have to do it through mtab,
except that we still have to work when there is no mtab. Oh, and while we're at it, take advantage of the fact that modern processors avoid branches via conditional assignment where possible. ("x = a ? b : c;" turns into "x = c; if (a) x = b;" because that way there's no branch to potentially mispredict and thus never a bubble in the pipeline. The if(a) turns into an assembly test followed by a conditional assignment (rather than a conditional jump).) So since the compiler is going to do that _anyway_, we might as well take advantage of it to produce a slightly smaller binary. So there.
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