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authorSteven Whitehouse <steve@chygwyn.com>2012-05-29 10:47:51 +0100
committerSteven Whitehouse <swhiteho@redhat.com>2012-06-06 11:27:49 +0100
commit1b8ba31a88c5115687095ca2a01bfcaecb489b5a (patch)
treec32f35c93758abaeea64430d3ef824d9a2ef8fb4 /fs/gfs2/lops.c
parent23d0bb834e264f38335f19fe601564b8422431e7 (diff)
downloadop-kernel-dev-1b8ba31a88c5115687095ca2a01bfcaecb489b5a.zip
op-kernel-dev-1b8ba31a88c5115687095ca2a01bfcaecb489b5a.tar.gz
GFS2: Fix error handling when reading an invalid block from the journal
When we read an invalid block from the journal, we should not call withdraw, but simply print a message and return an error. It is up to the caller to then handle that error. In the case of mount that means a failed mount, rather than a withdraw (requiring a reboot). In the case of recovering another nodes journal then we return an error via the uevent. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/lops.c')
-rw-r--r--fs/gfs2/lops.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index 852c1be..8ff95a2 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -401,9 +401,14 @@ static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd)
goto out;
set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
- gfs2_meta_check(sdp, bd->bd_bh);
- gfs2_pin(sdp, bd->bd_bh);
mh = (struct gfs2_meta_header *)bd->bd_bh->b_data;
+ if (unlikely(mh->mh_magic != cpu_to_be32(GFS2_MAGIC))) {
+ printk(KERN_ERR
+ "Attempting to add uninitialised block to journal (inplace block=%lld)\n",
+ (unsigned long long)bd->bd_bh->b_blocknr);
+ BUG();
+ }
+ gfs2_pin(sdp, bd->bd_bh);
mh->__pad0 = cpu_to_be64(0);
mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid);
sdp->sd_log_num_buf++;
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