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authorStefan Roesch <shr@devkernel.io>2022-11-19 03:52:01 +0300
committerAndrew Morton <akpm@linux-foundation.org>2022-12-01 02:59:04 +0300
commitefc3e6ad53ea14225b434fddca261c9a1c56c707 (patch)
tree0ce0c134ac6f0bd96505899dc41a0264527677db /mm/page-writeback.c
parent00df7d51263b46ed93f7572e2d09579746f7b1eb (diff)
downloadlinux-efc3e6ad53ea14225b434fddca261c9a1c56c707.tar.xz
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.c14
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)