lookup_slow(): bugger off on IS_DEADDIR() from the very beginning (1936386e) · Commits · e / devices / android_kernel_oneplus_sm8150

fs/namei.c

+17 −6

Original line number	Diff line number	Diff line
		@@ -1603,8 +1603,15 @@ static struct dentry lookup_slow(const struct qstr name,
		struct dentry *dir,
		unsigned int flags)
		{
		struct dentry *dentry;
		inode_lock(dir->d_inode);
		struct dentry dentry, old;
		struct inode *inode = dir->d_inode;

		inode_lock(inode);
		/* Don't go there if it's already dead */
		if (unlikely(IS_DEADDIR(inode))) {
		inode_unlock(inode);
		return ERR_PTR(-ENOENT);
		}
		dentry = d_lookup(dir, name);
		if (unlikely(dentry)) {
		if ((dentry->d_flags & DCACHE_OP_REVALIDATE) &&
		@@ -1618,17 +1625,21 @@ static struct dentry lookup_slow(const struct qstr name,
		}
		}
		if (dentry) {
		inode_unlock(dir->d_inode);
		inode_unlock(inode);
		return dentry;
		}
		}
		dentry = d_alloc(dir, name);
		if (unlikely(!dentry)) {
		inode_unlock(dir->d_inode);
		inode_unlock(inode);
		return ERR_PTR(-ENOMEM);
		}
		dentry = lookup_real(dir->d_inode, dentry, flags);
		inode_unlock(dir->d_inode);
		old = inode->i_op->lookup(inode, dentry, flags);
		if (unlikely(old)) {
		dput(dentry);
		dentry = old;
		}
		inode_unlock(inode);
		return dentry;
		}