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libblockdriver: expose BLOCKDRIVER_MAX_DEVICES

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This constant determines the range of valid device_id_t values that
a block driver can return from the bdr_device hook: a value between
0 and (BLOCKDRIVER_MAX_DEVICES - 1) inclusive.

Change-Id: I80fac469e88ac13d4b869007e6f2c2f7569da433
This commit is contained in:
David van Moolenbroek 2013-09-10 23:35:15 +02:00 committed by Lionel Sambuc
parent 0f7f3c0d54
commit 3fb735cc74
2 changed files with 3 additions and 1 deletions
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2
include/minix/blockdriver_mt.h
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@ -4,6 +4,8 @@
#define BLOCKDRIVER_MT_API 1 /* do not expose the singlethreaded API */
#include <minix/blockdriver.h>
#define BLOCKDRIVER_MAX_DEVICES 32
void blockdriver_mt_task(struct blockdriver *driver_tab);
void blockdriver_mt_sleep(void);
void blockdriver_mt_wakeup(thread_id_t id);

2
lib/libblockdriver/const.h
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@ -5,7 +5,7 @@
#define STACK_SIZE 8192
/* Maximum number of devices supported. */
#define MAX_DEVICES 32
#define MAX_DEVICES BLOCKDRIVER_MAX_DEVICES
/* The maximum number of worker threads per device. */
#define MAX_WORKERS 32