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SubjectRe: ramdisk corruption problems - was: RE: pivot_root and initrdkern el panic woes
On Sun, Dec 30, 2001 at 09:40:11AM -0800, Linus Torvalds wrote:
> On Sat, 29 Dec 2001, Andrew Morton wrote:
> >
> > And what should we do with BH_New?
> The only point of BH_New was to not need this horror in three different
> places, and have the BH_New bit as a way of saying "this buffer has no
> contents yet", and fill it with zeroes in just _one_ place (ie the
> readpage path).

actually bh_new is needed also to serialize with the buffercache, a new
bh mapped in pagecache must be dropped from the buffercache before we
can start using it (unmap_underlying_metadata).

so at least for 2.4 I wouldn't drop it :)

> However, I don't think it was ever implemented, so if you prefer the
> straightforward (brute-force but ugly) approach, just get rid of it.
> Linus

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