rbd: implement watch/unwatch with new code

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Implement a new function to set up or tear down a watch event
for an mapped rbd image header using the new request code.

Create a new object request type "nodata" to handle this.  And
define rbd_osd_trivial_callback() which simply marks a request done.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

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Alex Elder 2013-01-18 12:31:10 -06:00 • committed by Sage Weil

parent 86ea43bfcb

commit 9969ebc5af

1 changed files with 86 additions and 3 deletions

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drivers/block/rbd.c

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