mirror of
https://github.com/koverstreet/bcachefs-tools.git
synced 2025-02-23 00:00:02 +03:00
f5baaf48e3
This moves the Rust sources out of rust_src/ and into the top level. Running the bcachefs executable out of the development tree is now: $ ./target/release/bcachefs command or $ cargo run --profile release -- command instead of "./bcachefs command". Building and installing is still: $ make && make install Signed-off-by: Thomas Bertschinger <tahbertschinger@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
#ifndef IOPRIO_H
|
|
#define IOPRIO_H
|
|
|
|
/*
|
|
* Gives us 8 prio classes with 13-bits of data for each class
|
|
*/
|
|
#define IOPRIO_BITS (16)
|
|
#define IOPRIO_CLASS_SHIFT (13)
|
|
#define IOPRIO_PRIO_MASK ((1UL << IOPRIO_CLASS_SHIFT) - 1)
|
|
|
|
#define IOPRIO_PRIO_CLASS(mask) ((mask) >> IOPRIO_CLASS_SHIFT)
|
|
#define IOPRIO_PRIO_DATA(mask) ((mask) & IOPRIO_PRIO_MASK)
|
|
#define IOPRIO_PRIO_VALUE(class, data) (((class) << IOPRIO_CLASS_SHIFT) | data)
|
|
|
|
#define ioprio_valid(mask) (IOPRIO_PRIO_CLASS((mask)) != IOPRIO_CLASS_NONE)
|
|
|
|
/*
|
|
* These are the io priority groups as implemented by CFQ. RT is the realtime
|
|
* class, it always gets premium service. BE is the best-effort scheduling
|
|
* class, the default for any process. IDLE is the idle scheduling class, it
|
|
* is only served when no one else is using the disk.
|
|
*/
|
|
enum {
|
|
IOPRIO_CLASS_NONE,
|
|
IOPRIO_CLASS_RT,
|
|
IOPRIO_CLASS_BE,
|
|
IOPRIO_CLASS_IDLE,
|
|
};
|
|
|
|
/*
|
|
* 8 best effort priority levels are supported
|
|
*/
|
|
#define IOPRIO_BE_NR (8)
|
|
|
|
enum {
|
|
IOPRIO_WHO_PROCESS = 1,
|
|
IOPRIO_WHO_PGRP,
|
|
IOPRIO_WHO_USER,
|
|
};
|
|
|
|
/*
|
|
* Fallback BE priority
|
|
*/
|
|
#define IOPRIO_NORM (4)
|
|
|
|
#endif
|