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xfs: require both realtime inodes to mount

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[ Upstream commit 64bafd2f1e ]

Since mkfs always formats the filesystem with the realtime bitmap and
summary inodes immediately after the root directory, we should expect
that both of them are present and loadable, even if there isn't a
realtime volume attached.  There's no reason to skip this if rbmino ==
NULLFSINO; in fact, this causes an immediate crash if the there /is/ a
realtime volume and someone writes to it.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Bill O'Donnell <billodo@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Darrick J. Wong
2018-12-12 15:18:52 -08:00
committed by Chris
parent b0e066fb5c
commit 7eed40a07c
1 changed files with 1 additions and 3 deletions
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4
fs/xfs/xfs_rtalloc.c
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@@ -1222,13 +1222,11 @@ xfs_rtmount_inodes(
xfs_sb_t *sbp;
sbp = &mp->m_sb;
if (sbp->sb_rbmino == NULLFSINO)
return 0;
error = xfs_iget(mp, NULL, sbp->sb_rbmino, 0, 0, &mp->m_rbmip);
if (error)
return error;
ASSERT(mp->m_rbmip != NULL);
ASSERT(sbp->sb_rsumino != NULLFSINO);
error = xfs_iget(mp, NULL, sbp->sb_rsumino, 0, 0, &mp->m_rsumip);
if (error) {
IRELE(mp->m_rbmip);