nfs: count DIO good bytes correctly with mirroring

Browse source

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>

...

This commit is contained in:

Peng Tao 2015-01-19 12:41:16 +08:00 • committed by Tom Haynes

parent aa8a45ee97

commit 5fadeb47dc

1 changed files with 8 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

12

fs/nfs/direct.c

View file