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Message-ID: <20080124145300.GD14348@skywalker> Date: Thu, 24 Jan 2008 20:23:00 +0530 From: "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: "Theodore Ts'o" <tytso@....EDU>, linux-kernel@...r.kernel.org, alex@...sterfs.com, adilger@...sterfs.com, sandeen@...hat.com, "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org> Subject: Re: [PATCH 41/49] ext4: Add multi block allocator for ext4 On Thu, Jan 24, 2008 at 01:26:14PM +0530, Aneesh Kumar K.V wrote: > > > > > > +/* find most significant bit */ > > > +static int fmsb(unsigned short word) > > > +{ > > > + int order; > > > + > > > + if (word > 255) { > > > + order = 7; > > > + word >>= 8; > > > + } else { > > > + order = -1; > > > + } > > > + > > > + do { > > > + order++; > > > + word >>= 1; > > > + } while (word != 0); > > > + > > > + return order; > > > +} > > > > Did we just reinvent fls()? > > replaced by fls. > > > That should be fls() - 1; The full patch is at http://www.radian.org/~kvaneesh/ext4/jan-24-2008/mballoc-core.patch The patch is too big to inline. -aneesh - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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