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authorPeng Tao <tao.peng@primarydata.com>2015-01-19 12:41:16 +0800
committerTom Haynes <loghyr@primarydata.com>2015-02-03 11:06:52 -0800
commit5fadeb47dcc5c30d4b6cf481b4a78689eab59443 (patch)
tree61144dbb7c04d5ddae49174c122ef1c686712b06 /fs/nfs/flexfilelayout/Makefile
parentaa8a45ee974dfe3ffe290daaf5db457afae56fde (diff)
nfs: count DIO good bytes correctly with mirroring
When resending to MDS, we might resend multiple mirroring requests to MDS. As a result, nfs_direct_good_bytes() ends up counting bytes multiple times, causing application to get wrong return results in read/write syscalls. Fix it by tracking start of a dreq and checking the range of pgio header. Cc: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com>
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