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author | Mark Tinguely <tinguely@sgi.com> | 2013-09-23 12:18:58 -0500 |
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committer | Ben Myers <bpm@sgi.com> | 2013-09-26 10:38:17 -0500 |
commit | 997def25e4b9cee3b01609e18a52f926bca8bd2b (patch) | |
tree | 3c17a7d97353a1cb755e3c4d0459c7bc0bcebd1d /kernel/time | |
parent | 566055d33a91ddddb1cb31220b01ac4abd2d2bdd (diff) |
xfs: fix node forward in xfs_node_toosmall
Commit f5ea1100 cleans up the disk to host conversions for
node directory entries, but because a variable is reused in
xfs_node_toosmall() the next node is not correctly found.
If the original node is small enough (<= 3/8 of the node size),
this change may incorrectly cause a node collapse when it should
not. That will cause an assert in xfstest generic/319:
Assertion failed: first <= last && last < BBTOB(bp->b_length),
file: /root/newest/xfs/fs/xfs/xfs_trans_buf.c, line: 569
Keep the original node header to get the correct forward node.
(When a node is considered for a merge with a sibling, it overwrites the
sibling pointers of the original incore nodehdr with the sibling's
pointers. This leads to loop considering the original node as a merge
candidate with itself in the second pass, and so it incorrectly
determines a merge should occur.)
Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
[v3: added Dave Chinner's (slightly modified) suggestion to the commit header,
cleaned up whitespace. -bpm]
Diffstat (limited to 'kernel/time')
0 files changed, 0 insertions, 0 deletions