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[JFFS2] Correct handling of JFFS2_FEATURE_RWCOMPAT_COPY nodes.

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We should preserve these when we come to garbage collect them, not let
them get erased. Use jffs2_garbage_collect_pristine() for this, and make
sure the summary code copes -- just refrain from writing a summary for any
block which contains a node we don't understand.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
David Woodhouse
2006-05-21 00:02:06 +01:00
parent fb9fbbcc93
commit 6171586a7a
4 changed files with 55 additions and 23 deletions
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15
fs/jffs2/scan.c
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@@ -851,11 +851,22 @@ scan_more:
ofs += PAD(je32_to_cpu(node->totlen));
break;
case JFFS2_FEATURE_RWCOMPAT_COPY:
case JFFS2_FEATURE_RWCOMPAT_COPY: {
struct jffs2_raw_node_ref *ref;
D1(printk(KERN_NOTICE "Unknown but compatible feature node (0x%04x) found at offset 0x%08x\n", je16_to_cpu(node->nodetype), ofs));
USED_SPACE(PAD(je32_to_cpu(node->totlen)));
ref = jffs2_alloc_raw_node_ref();
if (!ref)
return -ENOMEM;
ref->flash_offset = ofs | REF_PRISTINE;
ref->next_in_ino = 0;
jffs2_link_node_ref(c, jeb, ref, PAD(je32_to_cpu(node->totlen)));
/* We can't summarise nodes we don't grok */
jffs2_sum_disable_collecting(s);
ofs += PAD(je32_to_cpu(node->totlen));
break;
}
}
}
}