btrfs: fix lost return value due to variable shadowing
A block-local variable stores error code but btrfs_get_blocks_direct may
not return it in the end as there's a ret defined in the function scope.
CC: <stable@vger.kernel.org> # 3.6+
Fixes: d187663ef2
("Btrfs: lock extents as we map them in DIO")
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
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@ -7288,7 +7288,6 @@ static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock,
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((BTRFS_I(inode)->flags & BTRFS_INODE_NODATACOW) &&
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em->block_start != EXTENT_MAP_HOLE)) {
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int type;
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int ret;
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u64 block_start, orig_start, orig_block_len, ram_bytes;
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if (test_bit(EXTENT_FLAG_PREALLOC, &em->flags))
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