Sergey Bugaev 88e23113ae Kernel: Tweak FileBackedFS API to avoid intermediary copies ...

read_block() and write_block() now accept the count (how many bytes to read
or write) and offset (where in the block to start; defaults to 0). Using these
new APIs, we can avoid doing copies between intermediary buffers in a lot more
cases. Hopefully this improves performance or something.

2020-05-19 11:07:35 +02:00

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