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path: root/fs/nilfs2/bmap_union.h
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2009-04-07nilfs2: integrated block mappingKoji Sato
This adds structures and operations for the block mapping (bmap for short). NILFS2 uses direct mappings for short files or B-tree based mappings for longer files. Every on-disk data block is held with inodes and managed through this block mapping. The nilfs_bmap structure and a set of functions here provide this capability to the NILFS2 inode. [penberg@cs.helsinki.fi: remove a bunch of bmap wrapper macros] [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Koji Sato <sato.koji@lab.ntt.co.jp> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>