tree 1dfb123d7279ddfcbaa4a3a11df52cf51b0a0402
parent 29a951dfb3c3263c3a0f3bd9f7f2c2cfde4baedb
author Linus Torvalds <torvalds@linux-foundation.org> 1610240950 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1610823086 -0800

mm: don't play games with pinned pages in clear_page_refs

Turning a pinned page read-only breaks the pinning after COW.  Don't do it.

The whole "track page soft dirty" state doesn't work with pinned pages
anyway, since the page might be dirtied by the pinning entity without
ever being noticed in the page tables.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>