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| author | Stefan Roesch <shr@devkernel.io> | 2022-11-19 01:52:05 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-12-01 00:59:05 +0100 |
| commit | 712c00d66a342a3ed375df41c3df7d3d2abad2c0 (patch) | |
| tree | 493b209f1e7a446e28adcf656f3126ee307551ff /mm | |
| parent | mm: document /sys/class/bdi/<bdi>/max_bytes knob (diff) | |
| download | linux-712c00d66a342a3ed375df41c3df7d3d2abad2c0.tar.xz linux-712c00d66a342a3ed375df41c3df7d3d2abad2c0.zip | |
mm: add bdi_get_min_bytes() function
This adds a function to return the specified value for min_bytes. It
converts the stored min_ratio of the bdi to the corresponding bytes
value. This is an approximation as it is based on the value that is
returned by global_dirty_limits(), which can change. The returned
value can be different than the value when the min_bytes value was set.
Link: https://lkml.kernel.org/r/20221119005215.3052436-11-shr@devkernel.io
Signed-off-by: Stefan Roesch <shr@devkernel.io>
Cc: Chris Mason <clm@meta.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/page-writeback.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 20ae9adeb22f..c47824464f4c 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -740,6 +740,11 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio) } EXPORT_SYMBOL(bdi_set_max_ratio); +u64 bdi_get_min_bytes(struct backing_dev_info *bdi) +{ + return bdi_get_bytes(bdi->min_ratio); +} + u64 bdi_get_max_bytes(struct backing_dev_info *bdi) { return bdi_get_bytes(bdi->max_ratio); |