ext4: Enable extent format for symlinks.
This patch enables extent-formatted normal symlinks. Using extents format allows a symlink to refer to a block number larger than 2^32 on large filesystems. We still don't enable extent format for fast symlinks, which are contained in the inode itself. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMingming Cao <cmm@us.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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