Documentation: remove reference to ll_rw_blk.c and moved drivers/block/elevator.c
The drivers/block/ll_rw_block.c has been split and organized in the block/ directory, and also drivers/block/elevator.c has been moved to the block/ directory. Update Documentation/block/biodoc.txt accordingly Signed-off-by: Nikanth Karthikesan <knikanth@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>hifive-unleashed-5.1
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@ -914,7 +914,7 @@ I/O scheduler, a.k.a. elevator, is implemented in two layers. Generic dispatch
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queue and specific I/O schedulers. Unless stated otherwise, elevator is used
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queue and specific I/O schedulers. Unless stated otherwise, elevator is used
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to refer to both parts and I/O scheduler to specific I/O schedulers.
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to refer to both parts and I/O scheduler to specific I/O schedulers.
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Block layer implements generic dispatch queue in ll_rw_blk.c and elevator.c.
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Block layer implements generic dispatch queue in block/*.c.
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The generic dispatch queue is responsible for properly ordering barrier
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The generic dispatch queue is responsible for properly ordering barrier
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requests, requeueing, handling non-fs requests and all other subtleties.
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requests, requeueing, handling non-fs requests and all other subtleties.
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@ -926,8 +926,8 @@ be built inside the kernel. Each queue can choose different one and can also
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change to another one dynamically.
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change to another one dynamically.
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A block layer call to the i/o scheduler follows the convention elv_xxx(). This
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A block layer call to the i/o scheduler follows the convention elv_xxx(). This
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calls elevator_xxx_fn in the elevator switch (drivers/block/elevator.c). Oh,
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calls elevator_xxx_fn in the elevator switch (block/elevator.c). Oh, xxx
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xxx and xxx might not match exactly, but use your imagination. If an elevator
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and xxx might not match exactly, but use your imagination. If an elevator
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doesn't implement a function, the switch does nothing or some minimal house
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doesn't implement a function, the switch does nothing or some minimal house
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keeping work.
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keeping work.
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