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fs/dcache: bring back explicit INIT_HLIST_BL_HEAD init

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Commit 3d375d7859 ("mm: update callers to use HASH_ZERO flag") removed
INIT_HLIST_BL_HEAD and uses the ZERO flag instead for the init. However
on RT we have also a spinlock which needs an init call so we can't use
that.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
This commit is contained in:
Sebastian Andrzej Siewior 2017-09-13 12:32:34 +02:00 committed by Alibek Omarov
parent b0408fdcf9
commit e852fda5d8
1 changed files with 11 additions and 0 deletions
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11
fs/dcache.c
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@ -3143,6 +3143,8 @@ __setup("dhash_entries=", set_dhash_entries);
static void __init dcache_init_early(void)
{
unsigned int loop;
/* If hashes are distributed across NUMA nodes, defer
* hash allocation until vmalloc space is available.
*/
@ -3159,11 +3161,16 @@ static void __init dcache_init_early(void)
NULL,
0,
0);
for (loop = 0; loop < (1U << d_hash_shift); loop++)
INIT_HLIST_BL_HEAD(dentry_hashtable + loop);
d_hash_shift = 32 - d_hash_shift;
}
static void __init dcache_init(void)
{
unsigned int loop;
/*
* A constructor could be added for stable state like the lists,
* but it is probably not worth it because of the cache nature
@ -3187,6 +3194,10 @@ static void __init dcache_init(void)
NULL,
0,
0);
for (loop = 0; loop < (1U << d_hash_shift); loop++)
INIT_HLIST_BL_HEAD(dentry_hashtable + loop);
d_hash_shift = 32 - d_hash_shift;
}