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f2fs: add comments of start_bidx_of_node
The caller of start_bidx_of_node() should give proper node offsets which point only direct node blocks. Otherwise, it is a caller's bug. This patch adds comments to make it clear. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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@ -424,7 +424,11 @@ next_step:
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}
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}
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/*
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/*
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* Calculate start block index that this node page contains
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* Calculate start block index indicating the given node offset.
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* Be careful, caller should give this node offset only indicating direct node
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* blocks. If any node offsets, which point the other types of node blocks such
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* as indirect or double indirect node blocks, are given, it must be a caller's
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* bug.
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*/
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*/
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block_t start_bidx_of_node(unsigned int node_ofs)
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block_t start_bidx_of_node(unsigned int node_ofs)
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{
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{
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