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find_acceptable_alias(): skip NORCU aliases with zero refcount

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similar to d_find_any_alias() situation

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2026-05-04 00:32:43 -04:00
parent 1a967a7ec7
commit 87e801e167
1 changed files with 4 additions and 5 deletions
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9
fs/exportfs/expfs.c
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@ -53,10 +53,10 @@ find_acceptable_alias(struct dentry *result,
inode = result->d_inode;
spin_lock(&inode->i_lock);
for_each_alias(dentry, inode) {
dget(dentry);
if (!dget_alias_ilocked(dentry))
continue;
spin_unlock(&inode->i_lock);
if (toput)
dput(toput);
dput(toput);
if (dentry != result && acceptable(context, dentry)) {
dput(result);
return dentry;
@ -66,8 +66,7 @@ find_acceptable_alias(struct dentry *result,
}
spin_unlock(&inode->i_lock);
if (toput)
dput(toput);
dput(toput);
return NULL;
}