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SubjectRe: [patch-2.3.50-pre2] bdget() needs to be exported
On Wed, 8 Mar 2000, Mike Galbraith wrote:
> OK, I think I have it fixed, and would _really_ appreciate it if you would
> test/confirm. (would very much like to see this problem finally die..
> and stay dead long enough for someone to actually use the device :)

Hi Mike,

I tested your patch and it works ok (no initrd, just plain ramdisk) but I
have questions/comments:

1. I believe there is no need to check return of rbh = getblk() as
getblk() never returns NULL. This is why things like bread()/breada()
never check the return of getblk().

2. why do we mark_buffer_protected(rbh)? I thought the point was to make
bdflush to skip them when flushing buffers but looking at bdflush()
sources it skips !buffer_dirty() and buffer_locked() buffers and nothing
(except obviously show_buffers()) seems to ask if(buffer_protected(bh))

Hence my question - does mark_buffer_protected(bh) serve any purpose?

Tigran A. Aivazian |
Escalations Research Group | tel: +44-(0)1923-813796
Santa Cruz Operation Ltd |

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