* UBIFS: Question about calc_dd_growth()
@ 2015-07-20 5:53 Dongsheng Yang
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From: Dongsheng Yang @ 2015-07-20 5:53 UTC (permalink / raw)
To: Richard Weinberger, Artem Bityutskiy, linux-mtd
Hi Atem and Richard and all:
I am doing some work about adding support of quota
in ubifs. But I found there is a question in calc_dd_growth
I am confused about.
417 if (req->dirtied_ino)
418 dd_growth += c->bi.inode_budget <<
(req->dirtied_ino - 1);
Why it's a '<<'?? I mean, to myself, it's clear to be that:
dd_growth += c->bi.inode_budget * req->dirtied_ino;
Could you help to explain it to me?
Thanx
Yang
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2015-07-20 5:53 UBIFS: Question about calc_dd_growth() Dongsheng Yang
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