Nir Tzachar wrote:
hello list.
can someone please explain the exact semantics the get_block_t function
(which is passed to mpage_readpage(s)) should implement??
i could not find any documentation, and existing code kind of baffled
me...
my current understanding goes like this:
if the block is present, call map_bh on the bh, with the physical block
number.
else, if "create" is set, allocate a new block for the inode, and again
update the new physical block number.
is this all??
thanks.
For a given file offset, get_block() function is supposed to return the
physical disk block# of the block. (and size of the block). If "create"
is one, it needs to allocate the block (if it doesn't already exist).
Makes sense ?
Thanks,
Badari
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