• Qu Wenruo's avatar
    btrfs: Get rid of the confusing btrfs_file_extent_inline_len · e41ca589
    Qu Wenruo authored
    We used to call btrfs_file_extent_inline_len() to get the uncompressed
    data size of an inlined extent.
    However this function is hiding evil, for compressed extent, it has no
    choice but to directly read out ram_bytes from btrfs_file_extent_item.
    While for uncompressed extent, it uses item size to calculate the real
    data size, and ignoring ram_bytes completely.
    In fact, for corrupted ram_bytes, due to above behavior kernel
    btrfs_print_leaf() can't even print correct ram_bytes to expose the bug.
    Since we have the tree-checker to verify all EXTENT_DATA, such mismatch
    can be detected pretty easily, thus we can trust ram_bytes without the
    evil btrfs_file_extent_inline_len().
    Signed-off-by: default avatarQu Wenruo <wqu@suse.com>
    Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
    Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>