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select_collect(): ignore dentries on shrink lists if they have positive refcounts

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If all dentries we find have positive refcounts and some happen
to be on shrink lists, there's no point trying to steal them in the
select_collect2() phase - we won't be able to evict any of them.  Busy on
shrink lists is still busy...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2026-04-12 14:17:52 -04:00
parent 87e801e167
commit f601ede8fd
1 changed files with 1 additions and 3 deletions
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4
fs/dcache.c
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@ -1589,9 +1589,7 @@ static enum d_walk_ret select_collect(void *_data, struct dentry *dentry)
if (data->start == dentry)
goto out;
if (dentry->d_flags & DCACHE_SHRINK_LIST) {
data->found++;
} else if (!dentry->d_lockref.count) {
if (!dentry->d_lockref.count) {
to_shrink_list(dentry, &data->dispose);
data->found++;
} else if (dentry->d_lockref.count < 0) {