tree cbb6329257bcf64c2060b7744fc5094716b355d4
parent f832b67df4cc1d47b40bca1dbb69336d1178a645
author Maxim Dounin <mdounin@mdounin.ru> 1635528111 +0300
committer Maxim Dounin <mdounin@mdounin.ru> 1635528111 +0300

Fixed sendfile() limit handling on Linux.

On Linux starting with 2.6.16, sendfile() silently limits all operations
to MAX_RW_COUNT, defined as (INT_MAX & PAGE_MASK).  This incorrectly
triggered the interrupt check, and resulted in 0-sized writev() on the
next loop iteration.

Fix is to make sure the limit is always checked, so we will return from
the loop if the limit is already reached even if number of bytes sent is
not exactly equal to the number of bytes we've tried to send.