diff options
| author | phk <phk@FreeBSD.org> | 2000-05-03 07:47:46 +0000 |
|---|---|---|
| committer | phk <phk@FreeBSD.org> | 2000-05-03 07:47:46 +0000 |
| commit | c7feb175725898650e653125977fd06936707337 (patch) | |
| tree | d4b04879f7ed3a3547183a5315db12b5c955e719 /sys/sys/bio.h | |
| parent | 62efea1e92f2c29489a4040c037e38803f1a1c84 (diff) | |
| download | FreeBSD-src-c7feb175725898650e653125977fd06936707337.zip FreeBSD-src-c7feb175725898650e653125977fd06936707337.tar.gz | |
Convert the vm_pager_strategy() interface to take a struct bio instead of
a struct buf. Don't try to examine B_ASYNC, it is a layering violation
to do so. The only current user of this interface is vn(4) which, since
it emulates a disk interface, operates on struct bio already.
Diffstat (limited to 'sys/sys/bio.h')
| -rw-r--r-- | sys/sys/bio.h | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/sys/sys/bio.h b/sys/sys/bio.h index 15fe014..60920a6 100644 --- a/sys/sys/bio.h +++ b/sys/sys/bio.h @@ -174,10 +174,6 @@ struct buf { struct vm_page *b_pages[btoc(MAXPHYS)]; int b_npages; struct workhead b_dep; /* List of filesystem dependencies. */ - struct chain_info { /* buffer chaining */ - struct buf *parent; - int count; - } b_chain; }; #define b_spc b_pager.pg_spc @@ -230,8 +226,10 @@ struct buf { #define BIO_DELETE 4 #define BIO_FORMAT 8 -#define BIO_ERROR 0x00000001 -#define BIO_ORDERED 0x00000002 +#define BIO_ERROR 0x00000001 /* I/O error occurred. */ +#define BIO_ORDERED 0x00000002 /* Must guarantee I/O ordering */ +#define BIO_FLAG2 0x40000000 /* Available for local hacks */ +#define BIO_FLAG1 0x80000000 /* Available for local hacks */ #define B_AGE 0x00000001 /* Move to age queue when I/O done. */ #define B_NEEDCOMMIT 0x00000002 /* Append-write in progress. */ @@ -243,7 +241,7 @@ struct buf { #define B_DELWRI 0x00000080 /* Delay I/O until buffer reused. */ #define B_DONE 0x00000200 /* I/O completed. */ #define B_EINTR 0x00000400 /* I/O was interrupted */ -#define B_ERROR 0x00000800 /* I/O error occurred. */ +#define B_00000800 0x00000800 /* Available flag. */ #define B_SCANNED 0x00001000 /* VOP_FSYNC funcs mark written bufs */ #define B_INVAL 0x00002000 /* Does not contain valid info. */ #define B_LOCKED 0x00004000 /* Locked in core (not reusable). */ @@ -258,11 +256,11 @@ struct buf { #define B_WRITEINPROG 0x01000000 /* Write in progress. */ #define B_XXX 0x02000000 /* Debugging flag. */ #define B_PAGING 0x04000000 /* volatile paging I/O -- bypass VMIO */ -#define B_ORDERED 0x08000000 /* Must guarantee I/O ordering */ +#define B_08000000 0x08000000 /* Available flag. */ #define B_RAM 0x10000000 /* Read ahead mark (flag) */ #define B_VMIO 0x20000000 /* VMIO flag */ #define B_CLUSTER 0x40000000 /* pagein op, so swap() can count it */ -#define B_AUTOCHAINDONE 0x80000000 /* Available flag */ +#define B_80000000 0x80000000 /* Available flag. */ #define PRINT_BUF_FLAGS "\20\40autochain\37cluster\36vmio\35ram\34ordered" \ "\33paging\32xxx\31writeinprog\30want\27relbuf\26dirty" \ |
