get_user_pages(), pinned pages, and DAX
get_user_pages(), pinned pages, and DAX
[Kernel] Posted May 7, 2019 20:14 UTC (Tue) by corbet
The problems associated with the kernel's internal get_user_pages() function have been a topic of discussion at the Linux Storage, Filesystem, and Memory-Management Summit for a few years. At the 2019 event, Jan Kara began a plenary session by saying that it would be "like last year's session". It turned out rather differently, though, perhaps due to the plenary setting; this discussion (along with the related session that followed) turned out to be one of the most heated at the entire conference.