commit 622daaff0a8975fb5c5b95f24f3234550ba32e92
author Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Sun Dec 26 16:38:43 2010 +0900
committer Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Mon Jan 10 14:05:46 2011 +0900
tree 5ae5de9044f962471fa2694654134f5b58f73ace
parent 27e6c7a3ce29ae5fa5bec4ed5917f8508bfac120

nilfs2: fiemap support

This adds fiemap to nilfs.  Two new functions, nilfs_fiemap and
nilfs_find_uncommitted_extent are added.

nilfs_fiemap() implements the fiemap inode operation, and
nilfs_find_uncommitted_extent() helps to get a range of data blocks
whose physical location has not been determined.

nilfs_fiemap() collects extent information by looping through
nilfs_bmap_lookup_contig and nilfs_find_uncommitted_extent routines.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>