* [PATCH 1/2] dcache: subtract d_hash_shift from 32 in advance
@ 2017-11-20 15:05 Alexey Dobriyan
0 siblings, 0 replies; only message in thread
From: Alexey Dobriyan @ 2017-11-20 15:05 UTC (permalink / raw)
To: viro; +Cc: linux-fsdevel
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
fs/dcache.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -111,7 +111,7 @@ static struct hlist_bl_head *dentry_hashtable __read_mostly;
static inline struct hlist_bl_head *d_hash(unsigned int hash)
{
- return dentry_hashtable + (hash >> (32 - d_hash_shift));
+ return dentry_hashtable + (hash >> d_hash_shift);
}
#define IN_LOOKUP_SHIFT 10
@@ -3592,6 +3592,7 @@ static void __init dcache_init_early(void)
&d_hash_mask,
0,
0);
+ d_hash_shift = 32 - d_hash_shift;
}
static void __init dcache_init(void)
@@ -3618,6 +3619,7 @@ static void __init dcache_init(void)
&d_hash_mask,
0,
0);
+ d_hash_shift = 32 - d_hash_shift;
}
/* SLAB cache for __getname() consumers */
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