change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/fs/sysv/itree.c
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@@ -145,6 +145,10 @@
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 		 */
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 		parent = block_to_cpu(SYSV_SB(inode->i_sb), branch[n-1].key);
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 		bh = sb_getblk(inode->i_sb, parent);
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+		if (!bh) {
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+			sysv_free_block(inode->i_sb, branch[n].key);
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+			break;
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+		}
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 		lock_buffer(bh);
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 		memset(bh->b_data, 0, blocksize);
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 		branch[n].bh = bh;
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@@ -438,7 +442,7 @@
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 		res += blocks;
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 		direct = 1;
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 	}
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-	return blocks;
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+	return res;
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 }
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 int sysv_getattr(const struct path *path, struct kstat *stat,