Andrew Morton wrote:
On Wed, 09 Aug 2006 18:20:26 -0700
Mingming Cao <[email protected]> wrote:
Add extent map support to ext4. Patch from Alex Tomas.
On disk extents format:
/*
* this is extent on-disk structure
* it's used at the bottom of the tree
*/
struct ext3_extent {
__le32 ee_block; /* first logical block extent covers */
__le16 ee_len; /* number of blocks covered by extent */
__le16 ee_start_hi; /* high 16 bits of physical block */
__le32 ee_start; /* low 32 bigs of physical block */
};
From a quick scan:
- There are several places which appear to be putting block numbers into
an `int'.
This is fixed in [PATCH 4/9] 48bit support in extents, where we
converted those "int" type block numbers to ext4_fsblk_t (which is
typedefined as sector_t to support 48bit)
Thanks,
Mingming
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