The quilt patch titled Subject: mm: document /sys/class/bdi/<bdi>/max_ratio_fine knob has been removed from the -mm tree. Its filename was mm-document-sys-class-bdi-bdi-max_ratio_fine-knob.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Stefan Roesch <shr@xxxxxxxxxxxx> Subject: mm: document /sys/class/bdi/<bdi>/max_ratio_fine knob Date: Fri, 18 Nov 2022 16:52:12 -0800 This documents the new /sys/class/bdi/<bdi>/max_ratio_fine knob. [akpm@xxxxxxxxxxxxxxxxxxxx: fix htmldocs warnings] Link: https://lkml.kernel.org/r/20221119005215.3052436-18-shr@xxxxxxxxxxxx Signed-off-by: Stefan Roesch <shr@xxxxxxxxxxxx> Cc: Chris Mason <clm@xxxxxxxx> Cc: Jens Axboe <axboe@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- Documentation/ABI/testing/sysfs-class-bdi | 13 +++++++++++++ 1 file changed, 13 insertions(+) --- a/Documentation/ABI/testing/sysfs-class-bdi~mm-document-sys-class-bdi-bdi-max_ratio_fine-knob +++ a/Documentation/ABI/testing/sysfs-class-bdi @@ -57,6 +57,19 @@ Description: (read-write) +What: /sys/class/bdi/<bdi>/max_ratio_fine +Date: November 2022 +Contact: Stefan Roesch <shr@xxxxxxxxxxxx> +Description: + Allows limiting a particular device to use not more than the + given value of the write-back cache. The value is given as part + of 1 million. This is useful in situations where we want to avoid + one device taking all or most of the write-back cache. For example + in case of an NFS mount that is prone to get stuck, or a FUSE mount + which cannot be trusted to play fair. + + (read-write) + What: /sys/class/bdi/<bdi>/min_bytes Date: October 2022 Contact: Stefan Roesch <shr@xxxxxxxxxxxx> _ Patches currently in -mm which might be from shr@xxxxxxxxxxxx are