The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/biotrack.h

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    1 /*
    2  * SYS/BIOTRACK.H
    3  *
    4  * $DragonFly: src/sys/sys/biotrack.h,v 1.1 2006/02/17 19:18:07 dillon Exp $
    5  */
    6 
    7 #ifndef _SYS_BIOTRACK_H_
    8 #define _SYS_BIOTRACK_H_
    9 
   10 /*
   11  * BIO tracking structure - tracks in-progress BIOs
   12  */
   13 struct bio_track {
   14         int     bk_active;      /* I/O's currently in progress */
   15 };
   16 
   17 #define bio_track_active(track) ((track)->bk_active)
   18 #define bio_track_ref(track)    atomic_add_int(&(track)->bk_active, 1)
   19 
   20 #ifdef _KERNEL
   21 
   22 int     bio_track_wait(struct bio_track *track, int slp_flags, int slp_timo);
   23 
   24 #endif
   25 
   26 #endif

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