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Augment DDB "show buffer" command to print the buffer's referenced

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vnode pointer (b_vp). The value of b_vp can be used by "show vnode"
to print the vnode and "show vnodebufs" to print all the clean and
dirty buffers associated with the vnode (which should include this
buffer).

Sponsored by: Netflix
This commit is contained in:
mckusick 2019-03-11 21:49:44 +00:00
parent 3770ce2b78
commit a92139d82f
1 changed files with 3 additions and 3 deletions
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6
sys/kern/vfs_bio.c
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@ -5337,11 +5337,11 @@ DB_SHOW_COMMAND(buffer, db_show_buffer)
(u_int)bp->b_ioflags, PRINT_BIO_FLAGS);
db_printf(
"b_error = %d, b_bufsize = %ld, b_bcount = %ld, b_resid = %ld\n"
"b_bufobj = (%p), b_data = %p, b_blkno = %jd, b_lblkno = %jd, "
"b_dep = %p\n",
"b_bufobj = (%p), b_data = %p\n, b_blkno = %jd, b_lblkno = %jd, "
"b_vp = %p, b_dep = %p\n",
bp->b_error, bp->b_bufsize, bp->b_bcount, bp->b_resid,
bp->b_bufobj, bp->b_data, (intmax_t)bp->b_blkno,
(intmax_t)bp->b_lblkno, bp->b_dep.lh_first);
(intmax_t)bp->b_lblkno, bp->b_vp, bp->b_dep.lh_first);
db_printf("b_kvabase = %p, b_kvasize = %d\n",
bp->b_kvabase, bp->b_kvasize);
if (bp->b_npages) {