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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:
Kirk McKusick 2019-03-11 21:49:44 +00:00
parent 3899afd370
commit 93fa5ae7f1
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) {