md/bad-block-log: add sysfs interface for accessing bad-block-log.

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This can show the log (providing it fits in one page) and
allows bad blocks to be 'acknowledged' meaning that they
have safely been recorded in metadata.

Clearing bad blocks is not allowed via sysfs (except for
code testing).  A bad block can only be cleared when
a write to the block succeeds.

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Namhyung Kim <namhyung@gmail.com>

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NeilBrown 2011-07-28 11:31:47 +10:00

parent 2230dfe4cc

commit 16c791a5af

1 changed files with 123 additions and 0 deletions

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drivers/md/md.c

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