Date: Sat, 03 Aug 2002 12:13:14 +0100 From: Ian Dowse <iedowse@maths.tcd.ie> To: Luigi Rizzo <rizzo@icir.org> Cc: current@freebsd.org, mckusick@mckusick.com Subject: Re: do we still need ufs/ffs/ffs_softdep_stub.c ? Message-ID: <200208031213.aa08402@salmon.maths.tcd.ie> In-Reply-To: Your message of "Sat, 03 Aug 2002 02:31:48 PDT." <20020803023148.A94525@iguana.icir.org>
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In message <20020803023148.A94525@iguana.icir.org>, Luigi Rizzo writes:
>Hi,
>just got the following panic with today's -current sources and
>an oldish config file (one not having "options SOFTUPDATES"):
> panic(c026ecc1,c66e1b94,c01ff565,c1cda000,0) at panic+0x7c
> softdep_slowdown(c1cda000,0,0,ffffffff,2) at softdep_slowdown+0xd
> ffs_truncate(c1cda000,0,0,c00,0) at ffs_truncate+0x81
>so the question is, do we still need ffs_softdep_stub.c ? In any
>case, getting an explicit panic does not really sound right...
The bug is in ffs_truncate() - it should not be calling softdep
functions on non-softdep filesystems. The panic is there to catch
exactly this kind of bug.
I think the following patch should fix it.
Ian
Index: ffs_inode.c
===================================================================
RCS file: /dump/FreeBSD-CVS/src/sys/ufs/ffs/ffs_inode.c,v
retrieving revision 1.81
diff -u -r1.81 ffs_inode.c
--- ffs_inode.c 19 Jul 2002 07:29:38 -0000 1.81
+++ ffs_inode.c 3 Aug 2002 11:05:43 -0000
@@ -173,7 +173,7 @@
* soft updates below.
*/
needextclean = 0;
- softdepslowdown = softdep_slowdown(ovp);
+ softdepslowdown = DOINGSOFTDEP(ovp) && softdep_slowdown(ovp);
extblocks = 0;
datablocks = DIP(oip, i_blocks);
if (fs->fs_magic == FS_UFS2_MAGIC && oip->i_din2->di_extsize > 0) {
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