ceph: don't assume frag tree splits in mds reply are sorted

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The algorithm that updates i_fragtree relies on that the frag tree
splits in mds reply are of the same order of i_fragtree. This is not
true because current MDS encodes frag tree splits in ascending order
of (unsigned)frag_t. But nodes in i_fragtree are sorted according to
ceph_frag_compare().

The fix is sort the frag tree splits first, then updates i_fragtree.

Signed-off-by: Yan, Zheng <zyan@redhat.com>

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Yan, Zheng 2016-05-03 20:55:50 +08:00 • committed by Ilya Dryomov

parent 209ae762a6

commit a407846ef7

1 changed files with 13 additions and 0 deletions

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fs/ceph/inode.c

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