diff options
| author | pjd <pjd@FreeBSD.org> | 2006-06-05 21:13:22 +0000 |
|---|---|---|
| committer | pjd <pjd@FreeBSD.org> | 2006-06-05 21:13:22 +0000 |
| commit | 280370a7dad3c18a14bdf5c30359d73f8c68695e (patch) | |
| tree | d5449898299d34dae7aa204b03a6602cb1c6be83 /sys/geom | |
| parent | ff4adb11fea6aec1b2e943f8d750e9b222b7c687 (diff) | |
| download | FreeBSD-src-280370a7dad3c18a14bdf5c30359d73f8c68695e.zip FreeBSD-src-280370a7dad3c18a14bdf5c30359d73f8c68695e.tar.gz | |
Add g_duplicate_bio() function which does the same thing what g_clone_bio()
is doing, but g_duplicate_bio() allocates new bio with M_WAITOK flag.
Diffstat (limited to 'sys/geom')
| -rw-r--r-- | sys/geom/geom.h | 1 | ||||
| -rw-r--r-- | sys/geom/geom_io.c | 25 |
2 files changed, 26 insertions, 0 deletions
diff --git a/sys/geom/geom.h b/sys/geom/geom.h index 79a2e3b..c3863c5 100644 --- a/sys/geom/geom.h +++ b/sys/geom/geom.h @@ -262,6 +262,7 @@ int g_modevent(module_t, int, void *); /* geom_io.c */ struct bio * g_clone_bio(struct bio *); +struct bio * g_duplicate_bio(struct bio *); void g_destroy_bio(struct bio *); void g_io_deliver(struct bio *bp, int error); int g_io_getattr(const char *attr, struct g_consumer *cp, int *len, void *ptr); diff --git a/sys/geom/geom_io.c b/sys/geom/geom_io.c index 77f446c..c95dbf8 100644 --- a/sys/geom/geom_io.c +++ b/sys/geom/geom_io.c @@ -186,6 +186,31 @@ g_clone_bio(struct bio *bp) return(bp2); } +struct bio * +g_duplicate_bio(struct bio *bp) +{ + struct bio *bp2; + + bp2 = uma_zalloc(biozone, M_WAITOK | M_ZERO); + bp2->bio_parent = bp; + bp2->bio_cmd = bp->bio_cmd; + bp2->bio_length = bp->bio_length; + bp2->bio_offset = bp->bio_offset; + bp2->bio_data = bp->bio_data; + bp2->bio_attribute = bp->bio_attribute; + bp->bio_children++; +#ifdef KTR + if (KTR_COMPILE & KTR_GEOM) { + struct stack st; + + CTR2(KTR_GEOM, "g_duplicate_bio(%p): %p", bp, bp2); + stack_save(&st); + CTRSTACK(KTR_GEOM, &st, 3, 0); + } +#endif + return(bp2); +} + void g_io_init() { |
