majianpeng 30379f4553 ceph: allow sync_read/write return partial successed size of read/write. ...

commit ee7289bfad upstream.

For sync_read/write, it may do multi stripe operations.If one of those
met erro, we return the former successed size rather than a error value.
There is a exception for write-operation met -EOLDSNAPC.If this occur,we
retry the whole write again.

Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2014-01-09 12:24:25 -08:00

24 KiB

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