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__dput_to_list(): do decrement of refcount in the callers

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... and rename it to to_shrink_list(), seeing that it no longer
does dropping any references

Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2023-10-30 00:43:48 -04:00
parent 15f23734a1
commit 6511f6be77
1 changed files with 11 additions and 10 deletions
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21
fs/dcache.c
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@ -902,16 +902,13 @@ void dput(struct dentry *dentry)
}
EXPORT_SYMBOL(dput);
static void __dput_to_list(struct dentry *dentry, struct list_head *list)
static void to_shrink_list(struct dentry *dentry, struct list_head *list)
__must_hold(&dentry->d_lock)
{
if (dentry->d_flags & DCACHE_SHRINK_LIST) {
/* let the owner of the list it's on deal with it */
--dentry->d_lockref.count;
} else {
if (!(dentry->d_flags & DCACHE_SHRINK_LIST)) {
if (dentry->d_flags & DCACHE_LRU_LIST)
d_lru_del(dentry);
if (!--dentry->d_lockref.count)
if (!dentry->d_lockref.count)
d_shrink_add(dentry, list);
}
}
@ -925,8 +922,10 @@ void dput_to_list(struct dentry *dentry, struct list_head *list)
}
rcu_read_unlock();
dentry->d_lockref.count = 1;
if (!retain_dentry(dentry))
__dput_to_list(dentry, list);
if (!retain_dentry(dentry)) {
--dentry->d_lockref.count;
to_shrink_list(dentry, list);
}
spin_unlock(&dentry->d_lock);
}
@ -1165,8 +1164,10 @@ out:
static inline void shrink_kill(struct dentry *victim, struct list_head *list)
{
struct dentry *parent = victim->d_parent;
if (parent != victim)
__dput_to_list(parent, list);
if (parent != victim) {
--parent->d_lockref.count;
to_shrink_list(parent, list);
}
__dentry_kill(victim);
}