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authorDavid Woodhouse <dwmw2@infradead.org>2007-05-05 17:50:25 +0100
committerDavid Woodhouse <dwmw2@infradead.org>2007-05-20 11:28:22 -0400
commit8ae5d31263c746f1680d005b33a82d167cdb9eb6 (patch)
treea407ee09563352b8e49d49e53dfc2cdb3c663346
parentacaebfd8a7af0019b2edfcf4045c56c3e18375c5 (diff)
[JFFS2] Fix BUG() caused by failing to discard xattrs on deleted files.
When we cannot mark nodes as obsolete, such as on NAND flash, we end up having to delete inodes with !nlink in jffs2_build_remove_unlinked_inode(). However, jffs2_build_xattr_subsystem() runs later than this, and will attach an xref to the dead inode. Then later when the last nodes of that dead inode are erased we hit a BUG() in jffs2_del_ino_cache() because we're not supposed to get there with an xattr still attached to the inode which is being killed. The simple fix is to refrain from attaching xattrs to inodes with zero nlink, in jffs2_build_xattr_subsystem(). It's it's OK to trust nlink here because the file system isn't actually mounted yet, so there's no chance that a zero-nlink file could actually be alive still because it's open. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
-rw-r--r--fs/jffs2/xattr.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c
index 78fc08893a6..073469856d4 100644
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -825,7 +825,7 @@ void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c)
ref->xd and ref->ic are not valid yet. */
xd = jffs2_find_xattr_datum(c, ref->xid);
ic = jffs2_get_ino_cache(c, ref->ino);
- if (!xd || !ic) {
+ if (!xd || !ic || !ic->nlink) {
dbg_xattr("xref(ino=%u, xid=%u, xseqno=%u) is orphan.\n",
ref->ino, ref->xid, ref->xseqno);
ref->xseqno |= XREF_DELETE_MARKER;