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-rw-r--r--fs/gfs2/glock.c2
-rw-r--r--fs/gfs2/quota.c2
-rw-r--r--fs/mbcache.c2
-rw-r--r--fs/nfs/dir.c2
-rw-r--r--fs/quota/dquot.c5
-rw-r--r--fs/super.c14
-rw-r--r--fs/xfs/xfs_qm.c2
-rw-r--r--include/linux/dcache.h4
8 files changed, 18 insertions, 15 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 722329c..b782bb5 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1462,7 +1462,7 @@ static int gfs2_shrink_glock_memory(struct shrinker *shrink,
gfs2_scan_glock_lru(sc->nr_to_scan);
}
- return (atomic_read(&lru_count) / 100) * sysctl_vfs_cache_pressure;
+ return vfs_pressure_ratio(atomic_read(&lru_count));
}
static struct shrinker glock_shrinker = {
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 3768c2f..d550a5d 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -114,7 +114,7 @@ int gfs2_shrink_qd_memory(struct shrinker *shrink, struct shrink_control *sc)
spin_unlock(&qd_lru_lock);
out:
- return (atomic_read(&qd_lru_count) * sysctl_vfs_cache_pressure) / 100;
+ return vfs_pressure_ratio(atomic_read(&qd_lru_count));
}
static u64 qd2index(struct gfs2_quota_data *qd)
diff --git a/fs/mbcache.c b/fs/mbcache.c
index 8c32ef3..5eb0476 100644
--- a/fs/mbcache.c
+++ b/fs/mbcache.c
@@ -189,7 +189,7 @@ mb_cache_shrink_fn(struct shrinker *shrink, struct shrink_control *sc)
list_for_each_entry_safe(entry, tmp, &free_list, e_lru_list) {
__mb_cache_entry_forget(entry, gfp_mask);
}
- return (count / 100) * sysctl_vfs_cache_pressure;
+ return vfs_pressure_ratio(count);
}
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index e79bc6c..813ef25 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -2046,7 +2046,7 @@ remove_lru_entry:
}
spin_unlock(&nfs_access_lru_lock);
nfs_access_free_list(&head);
- return (atomic_long_read(&nfs_access_nr_entries) / 100) * sysctl_vfs_cache_pressure;
+ return vfs_pressure_ratio(atomic_long_read(&nfs_access_nr_entries));
}
static void __nfs_access_zap_cache(struct nfs_inode *nfsi, struct list_head *head)
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 9a702e19..13eee84 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -719,9 +719,8 @@ static int shrink_dqcache_memory(struct shrinker *shrink,
prune_dqcache(nr);
spin_unlock(&dq_list_lock);
}
- return ((unsigned)
- percpu_counter_read_positive(&dqstats.counter[DQST_FREE_DQUOTS])
- /100) * sysctl_vfs_cache_pressure;
+ return vfs_pressure_ratio(
+ percpu_counter_read_positive(&dqstats.counter[DQST_FREE_DQUOTS]));
}
static struct shrinker dqcache_shrinker = {
diff --git a/fs/super.c b/fs/super.c
index f6961ea..63b6863 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -82,13 +82,13 @@ static int prune_super(struct shrinker *shrink, struct shrink_control *sc)
int inodes;
/* proportion the scan between the caches */
- dentries = (sc->nr_to_scan * sb->s_nr_dentry_unused) /
- total_objects;
- inodes = (sc->nr_to_scan * sb->s_nr_inodes_unused) /
- total_objects;
+ dentries = mult_frac(sc->nr_to_scan, sb->s_nr_dentry_unused,
+ total_objects);
+ inodes = mult_frac(sc->nr_to_scan, sb->s_nr_inodes_unused,
+ total_objects);
if (fs_objects)
- fs_objects = (sc->nr_to_scan * fs_objects) /
- total_objects;
+ fs_objects = mult_frac(sc->nr_to_scan, fs_objects,
+ total_objects);
/*
* prune the dcache first as the icache is pinned by it, then
* prune the icache, followed by the filesystem specific caches
@@ -104,7 +104,7 @@ static int prune_super(struct shrinker *shrink, struct shrink_control *sc)
sb->s_nr_inodes_unused + fs_objects;
}
- total_objects = (total_objects / 100) * sysctl_vfs_cache_pressure;
+ total_objects = vfs_pressure_ratio(total_objects);
drop_super(sb);
return total_objects;
}
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index 6218a0a..956da2e 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -1722,7 +1722,7 @@ xfs_qm_shake(
}
out:
- return (qi->qi_lru_count / 100) * sysctl_vfs_cache_pressure;
+ return vfs_pressure_ratio(qi->qi_lru_count);
}
/*
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 844a1ef..59066e0 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -395,4 +395,8 @@ static inline bool d_mountpoint(const struct dentry *dentry)
extern int sysctl_vfs_cache_pressure;
+static inline unsigned long vfs_pressure_ratio(unsigned long val)
+{
+ return mult_frac(val, sysctl_vfs_cache_pressure, 100);
+}
#endif /* __LINUX_DCACHE_H */
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