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dcache: d_find_alias needn't recheck IS_ROOT && DCACHE_DISCONNECTED

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If we get to this point and discover the dentry is not a root dentry, or
not DCACHE_DISCONNECTED--great, we always prefer that anyway.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
J. Bruce Fields 2014-01-16 17:17:31 -05:00 committed by Al Viro
parent 52ed46f0fa
commit 8d80d7dabe
1 changed files with 3 additions and 6 deletions
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9
fs/dcache.c
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@ -765,12 +765,9 @@ static struct dentry *__d_find_alias(struct inode *inode)
alias = discon_alias;
spin_lock(&alias->d_lock);
if (S_ISDIR(inode->i_mode) || !d_unhashed(alias)) {
if (IS_ROOT(alias) &&
(alias->d_flags & DCACHE_DISCONNECTED)) {
__dget_dlock(alias);
spin_unlock(&alias->d_lock);
return alias;
}
__dget_dlock(alias);
spin_unlock(&alias->d_lock);
return alias;
}
spin_unlock(&alias->d_lock);
goto again;