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block: look up holders by bdev
authorChristoph Hellwig <hch@lst.de>
Wed, 4 Aug 2021 07:58:14 +0000 (09:58 +0200)
committerChristoph Hellwig <hch@lst.de>
Wed, 4 Aug 2021 08:09:02 +0000 (10:09 +0200)
commitd7d597dac116fc4172bcbef540579272cd6048f0
treebf8c2638799dae8f25da748df602cbe0e2cda3f2tree
parentc7b460dbfb5b5b4afb88d10668aaa21d0f883815commit | diff
block: look up holders by bdev

Invert they way the holder relations are tracked.  This very
slightly reduces the memory overhead for partitioned devices.

Signed-off-by: Christoph Hellwig <hch@lst.de>
block/genhd.c diff | blob | history
block/holder.c diff | blob | history
fs/block_dev.c diff | blob | history
include/linux/blk_types.h diff | blob | history
include/linux/genhd.h diff | blob | history
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