add r8169 read mac form eeprom

hc

2024-02-19 1c055e55a242a33e574e48be530e06770a210dcd

 kernel/fs/udf/truncate.c
..
..
@@ -120,60 +120,42 @@
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 void udf_discard_prealloc(struct inode *inode)
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 {
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-	struct extent_position epos = { NULL, 0, {0, 0} };
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+	struct extent_position epos = {};
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+	struct extent_position prev_epos = {};
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 	struct kernel_lb_addr eloc;
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 	uint32_t elen;
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 	uint64_t lbcount = 0;
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 	int8_t etype = -1, netype;
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-	int adsize;
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 	struct udf_inode_info *iinfo = UDF_I(inode);
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+	int bsize = 1 << inode->i_blkbits;
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 	if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ||
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-	    inode->i_size == iinfo->i_lenExtents)
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+	    ALIGN(inode->i_size, bsize) == ALIGN(iinfo->i_lenExtents, bsize))
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 		return;
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-
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-	if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
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-		adsize = sizeof(struct short_ad);
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-	else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
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-		adsize = sizeof(struct long_ad);
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-	else
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-		adsize = 0;
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 	epos.block = iinfo->i_location;
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 	/* Find the last extent in the file */
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-	while ((netype = udf_next_aext(inode, &epos, &eloc, &elen, 1)) != -1) {
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-		etype = netype;
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+	while ((netype = udf_next_aext(inode, &epos, &eloc, &elen, 0)) != -1) {
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+		brelse(prev_epos.bh);
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+		prev_epos = epos;
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+		if (prev_epos.bh)
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+			get_bh(prev_epos.bh);
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+
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+		etype = udf_next_aext(inode, &epos, &eloc, &elen, 1);
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 		lbcount += elen;
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 	}
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 	if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30)) {
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-		epos.offset -= adsize;
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 		lbcount -= elen;
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-		extent_trunc(inode, &epos, &eloc, etype, elen, 0);
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-		if (!epos.bh) {
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-			iinfo->i_lenAlloc =
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-				epos.offset -
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-				udf_file_entry_alloc_offset(inode);
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-			mark_inode_dirty(inode);
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-		} else {
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-			struct allocExtDesc *aed =
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-				(struct allocExtDesc *)(epos.bh->b_data);
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-			aed->lengthAllocDescs =
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-				cpu_to_le32(epos.offset -
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-					    sizeof(struct allocExtDesc));
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-			if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) ||
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-			    UDF_SB(inode->i_sb)->s_udfrev >= 0x0201)
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-				udf_update_tag(epos.bh->b_data, epos.offset);
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-			else
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-				udf_update_tag(epos.bh->b_data,
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-					       sizeof(struct allocExtDesc));
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-			mark_buffer_dirty_inode(epos.bh, inode);
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-		}
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+		udf_delete_aext(inode, prev_epos);
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+		udf_free_blocks(inode->i_sb, inode, &eloc, 0,
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+				DIV_ROUND_UP(elen, 1 << inode->i_blkbits));
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 	}
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 	/* This inode entry is in-memory only and thus we don't have to mark
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 	 * the inode dirty */
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 	iinfo->i_lenExtents = lbcount;
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 	brelse(epos.bh);
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+	brelse(prev_epos.bh);
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 }
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 static void udf_update_alloc_ext_desc(struct inode *inode,