diff options
| author | Stefan Roesch <shr@devkernel.io> | 2022-11-18 16:52:01 -0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-11-30 15:59:04 -0800 |
| commit | efc3e6ad53ea14225b434fddca261c9a1c56c707 (patch) | |
| tree | 0ce0c134ac6f0bd96505899dc41a0264527677db /mm/page-writeback.c | |
| parent | 00df7d51263b46ed93f7572e2d09579746f7b1eb (diff) | |
mm: split off __bdi_set_max_ratio() function
This splits off __bdi_set_max_ratio() from bdi_set_max_ratio().
__bdi_set_max_ratio() will also be called from bdi_set_max_bytes(),
which will be introduced in the next patch.
Link: https://lkml.kernel.org/r/20221119005215.3052436-7-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/page-writeback.c')
| -rw-r--r-- | mm/page-writeback.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 719404e0d03d..e74ef596dc27 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -692,14 +692,10 @@ int bdi_set_min_ratio(struct backing_dev_info *bdi, unsigned int min_ratio) return ret; } -int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned max_ratio) +static int __bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio) { int ret = 0; - if (max_ratio > 100) - return -EINVAL; - max_ratio *= BDI_RATIO_SCALE; - spin_lock_bh(&bdi_lock); if (bdi->min_ratio > max_ratio) { ret = -EINVAL; @@ -711,6 +707,14 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned max_ratio) return ret; } + +int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio) +{ + if (max_ratio > 100) + return -EINVAL; + + return __bdi_set_max_ratio(bdi, max_ratio * BDI_RATIO_SCALE); +} EXPORT_SYMBOL(bdi_set_max_ratio); u64 bdi_get_max_bytes(struct backing_dev_info *bdi) |