26d36c3ae2
always start the pager kproc in swapinit(), simplifying kickpager(). allow zero conf.nswap and conf.nswppo. avoid allocating the reference map and iolist arrays in that case. use ulong for ioptr and iolist indices. don't panic when writing pages out to the swapfile fails. just requeue the page in the io transaction list so we will try again next time executeio() is run or just free the page when the swap reference was dropped. remove unused pagersummary() function. |
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