On Sat, 27 Oct 2001, Alain Knaff wrote:
> Appended to this mail is a patch meant to fix the "non-cached floppy"
> problem.
a) you _still_ need to stop all pending IO (readaheads in progress)
before final ->release()
b) at which point do you flush the cache? It definitely shouldn't
survive rmmod. And no, unregister_blkdev() is not a solution, courtesy
of devfs with its insane devfs=only option.
There is a related problem which is much nastier than short-living caches:
code that does bdev->bd_op = <stuff from devfs>; blkdev_get(bdev, ...);
Think what happens if rmmod comes while blkdev_get() sleeps ob ->bd_sem.
Notice that it had been there since the moment when devfs went into the
tree. Sigh...
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This archive was generated by hypermail 2b29 : Wed Oct 31 2001 - 21:00:33 EST