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(parent: 57941dd) | patch
mm: add FGP_UNCACHED folio creation flag
authorJens Axboe <axboe@kernel.dk>
Sat, 9 Nov 2024 17:03:01 +0000 (10:03 -0700)
committerJens Axboe <axboe@kernel.dk>
Sun, 1 Dec 2024 22:55:24 +0000 (15:55 -0700)
commit98664c563a1e7730e6abf3125073c691dae7c78d
tree01817df7f265060c77d4211de6dcf9c20b661f5btree
parent57941dd11e2d5b9731d448ceed3065488d02468ecommit | diff
mm: add FGP_UNCACHED folio creation flag

Callers can pass this in for uncached folio creation, in which case if
a folio is newly created it gets marked as uncached. If a folio exists
for this index and lookup succeeds, then it will not get marked as
uncached. If an !uncached lookup finds a cached folio, clear the flag.
For that case, there are competeting uncached and cached users of the
folio, and it should not get pruned.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
include/linux/pagemap.h diff | blob | blame | history
mm/filemap.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)