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fold dentry_rcuwalk_invalidate() into its only remaining caller

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2016-07-28 13:05:50 -04:00
parent 1a81a8f2a5
commit d614146d18
1 changed files with 2 additions and 15 deletions
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17
fs/dcache.c
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@ -316,20 +316,6 @@ static void dentry_free(struct dentry *dentry)
call_rcu(&dentry->d_u.d_rcu, __d_free); call_rcu(&dentry->d_u.d_rcu, __d_free);
} }
/**
* dentry_rcuwalk_invalidate - invalidate in-progress rcu-walk lookups
* @dentry: the target dentry
* After this call, in-progress rcu-walk path lookup will fail. This
* should be called after unhashing, and after changing d_inode (if
* the dentry has not already been unhashed).
*/
static inline void dentry_rcuwalk_invalidate(struct dentry *dentry)
{
lockdep_assert_held(&dentry->d_lock);
/* Go through am invalidation barrier */
write_seqcount_invalidate(&dentry->d_seq);
}
/* /*
* Release the dentry's inode, using the filesystem * Release the dentry's inode, using the filesystem
* d_iput() operation if defined. * d_iput() operation if defined.
@ -468,7 +454,8 @@ void __d_drop(struct dentry *dentry)
__hlist_bl_del(&dentry->d_hash); __hlist_bl_del(&dentry->d_hash);
dentry->d_hash.pprev = NULL; dentry->d_hash.pprev = NULL;
hlist_bl_unlock(b); hlist_bl_unlock(b);
dentry_rcuwalk_invalidate(dentry); /* After this call, in-progress rcu-walk path lookup will fail. */
write_seqcount_invalidate(&dentry->d_seq);
} }
} }
EXPORT_SYMBOL(__d_drop); EXPORT_SYMBOL(__d_drop);