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(parent: d0a58c4) | patch
ceph: fix readdir vs fragmentation race
authorYan, Zheng <zyan@redhat.com>
Wed, 12 Oct 2016 06:48:28 +0000 (14:48 +0800)
committerIlya Dryomov <idryomov@gmail.com>
Tue, 18 Oct 2016 10:09:58 +0000 (12:09 +0200)
commit4b021460720223ef059d4a11956def6ff78dc2cc
treeea39f8a0ae76f31f4f8004fd7045824ae608e5bbtree | snapshot
parentd0a58c4b77619ad86f819fa2ae124c029f6e66aecommit | diff
ceph: fix readdir vs fragmentation race

following sequence of events tigger the race

- client readdir frag 0* -> got item 'A'
- MDS merges frag 0* and frag 1*
- client send readdir request (frag 1*, offset 2, readdir_start 'A')
- MDS reply items (that are after item 'A') in frag *

Link: http://tracker.ceph.com/issues/17286
Signed-off-by: Yan, Zheng <zyan@redhat.com>
fs/ceph/inode.c diff | blob | history
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