ext3/ext4: Factor out disk addressability check
As part of adding support for OCFS2 to mount huge volumes, we need to check that the sector_t and page cache of the system are capable of addressing the entire volume. An identical check already appears in ext3 and ext4. This patch moves the addressability check into its own function in fs/libfs.c and modifies ext3 and ext4 to invoke it. [Edited to -EINVAL instead of BUG_ON() for bad blocksize_bits -- Joel] Signed-off-by: NPatrick LoPresti <lopresti@gmail.com> Cc: linux-ext4@vger.kernel.org Acked-by: NAndreas Dilger <adilger@dilger.ca> Signed-off-by: NJoel Becker <joel.becker@oracle.com>
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