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authorYan, Zheng <zyan@redhat.com>2015-09-07 10:46:24 +0300
committerIlya Dryomov <idryomov@gmail.com>2015-09-09 09:52:29 +0300
commit438386853d4c0c48fe73bf05a7d61c70ca5a3bfb (patch)
treeb760a610262df0e202e949cbb3b6f71726ff2c38 /firmware
parent55b0b31cbc09f80db384671e22cdc94b2aa26b29 (diff)
downloadlinux-438386853d4c0c48fe73bf05a7d61c70ca5a3bfb.tar.xz
ceph: improve readahead for file holes
When readahead encounters file holes, osd reply returns error -ENOENT, finish_read() skips adding pages to the the page cache. So readahead does not work for file holes. The fix is adding zero pages to the page cache when -ENOENT is returned. Signed-off-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'firmware')
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