Change Details

For file systems with block size smaller than PAGE_SIZE, partially valid pages may exist anywhere in the file, so have the vn_read_from_obj() fast path skip any pages that are not completely valid rather than only skipping pages that are completely invalid. Sponsored by: Netflix

vn_read_from_obj() requires that all pages of a vnode (except the last partial page) be either completely valid or completely invalid, but for file systems with block size smaller than PAGE_SIZE, partially valid pages may exist anywhere in the file. Do not enable the vn_read_from_obj() path in this case. Sponsored by: Netflix

For file systems with block size smaller than PAGE_SIZE, partiallyvn_read_from_obj() requires that all pages of a vnode (except the last partial page) be either completely valid or completely invalid, but for file systems with block size smaller than PAGE_SIZE, partially valid pages may exist anywhere in the file, so have the. vn_read_from_obj() fast path skip any pages that are not completely valid rather than only skipping pages that are completely invalidDo not enable the vn_read_from_obj() path in this case. Sponsored by: Netflix