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| author | Ilya Dryomov <ilya.dryomov@inktank.com> | 2014-02-03 15:56:33 +0400 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2014-02-07 22:45:53 +0400 |
| commit | ff513ace9b772e75e337f8e058cc7f12816843fe (patch) | |
| tree | c41312d8926e5f12f4f47426f46cce3da148c0a9 /mm/mmzone.c | |
| parent | 0bbfdfe8d25fcc1d5c2edb6b060fb0c5cf66aff9 (diff) | |
| download | linux-ff513ace9b772e75e337f8e058cc7f12816843fe.tar.xz | |
libceph: take map_sem for read in handle_reply()
Handling redirect replies requires both map_sem and request_mutex.
Taking map_sem unconditionally near the top of handle_reply() avoids
possible race conditions that arise from releasing request_mutex to be
able to acquire map_sem in redirect reply case. (Lock ordering is:
map_sem, request_mutex, crush_mutex.)
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'mm/mmzone.c')
0 files changed, 0 insertions, 0 deletions