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hfsplus: fix warning with 64k PAGE_SIZE
fs/hfsplus/btree.c: In function 'hfsplus_bmap_alloc': fs/hfsplus/btree.c:239: warning: comparison is always false due to limited range of data type But this might hide a real bug? Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -184,7 +184,9 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree)
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struct hfs_bnode *node, *next_node;
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struct page **pagep;
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u32 nidx, idx;
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u16 off, len;
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unsigned off;
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u16 off16;
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u16 len;
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u8 *data, byte, m;
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int i;
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@ -211,7 +213,8 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree)
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node = hfs_bnode_find(tree, nidx);
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if (IS_ERR(node))
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return node;
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len = hfs_brec_lenoff(node, 2, &off);
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len = hfs_brec_lenoff(node, 2, &off16);
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off = off16;
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off += node->page_offset;
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pagep = node->page + (off >> PAGE_CACHE_SHIFT);
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@ -256,7 +259,8 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree)
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return next_node;
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node = next_node;
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len = hfs_brec_lenoff(node, 0, &off);
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len = hfs_brec_lenoff(node, 0, &off16);
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off = off16;
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off += node->page_offset;
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pagep = node->page + (off >> PAGE_CACHE_SHIFT);
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data = kmap(*pagep);
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