diff options
| author | Peng Tao <tao.peng@primarydata.com> | 2014-07-03 13:07:45 +0800 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2014-07-12 18:22:41 -0400 |
| commit | c8a3292d246f3ed326698ed6acf3286c62b7bf11 (patch) | |
| tree | 076a698314f3ae471eb849580996d0b4a221b13c /fs/devpts | |
| parent | f3792d63d2a377b7cbe91a204e9582c4cf831eb3 (diff) | |
| download | linux-c8a3292d246f3ed326698ed6acf3286c62b7bf11.tar.bz2 | |
pnfs/filelayout: fix race between mark_request_commit and scan_commit_lists
We need to hold cinfo lock while setting bucket->wlseg and adding req to nwritten
list at the same time. Otherwise there might be a window where nwritten list
is empty yet we set bucket->wlseg, in which case ff_layout_scan_ds_commit_list()
may end up clearing bucket->wlseg incorrectly, casuing client to oops later on.
This was found when testing flexfile layout but filelayout has the same problem.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Tom Haynes <Thomas.Haynes@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/devpts')
0 files changed, 0 insertions, 0 deletions