ceph: allocate non-zero page to fscache in readpage()
ceph_osdc_readpages() returns number of bytes read, currently, the code only allocate full-zero page into fscache, this patch fixes this. Signed-off-by: Li Wang <liwang@ubuntukylin.com> Reviewed-by: Milosz Tanski <milosz@adfin.com> Reviewed-by: Sage Weil <sage@inktank.com>
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