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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-06 01:00:48 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-20 10:05:47 +0900
commit9cb4e0d2b99e8b0e5e269d898ae6ab1967647c5a (patch)
tree09ac1daa4985b4717afc818f89cfe2439664b44a /fs/nilfs2/mdt.c
parent09bf4aae0a3c471b721c43e7bdb6132200d907b2 (diff)
downloadlinux-9cb4e0d2b99e8b0e5e269d898ae6ab1967647c5a.tar.gz
nilfs2: move out mark_inode_dirty calls from bmap routines
Previously, nilfs_bmap_add_blocks() and nilfs_bmap_sub_blocks() called mark_inode_dirty() after they changed the number of data blocks. This moves these calls outside bmap outermost functions like nilfs_bmap_insert() or nilfs_bmap_truncate(). This will mitigate overhead for truncate or delete operation since they repeatedly remove set of blocks. Nearly 10 percent improvement was observed for removal of a large file: # dd if=/dev/zero of=/test/aaa bs=1M count=512 # time rm /test/aaa real 2.968s -> 2.705s Further optimization may be possible by eliminating these mark_inode_dirty() uses though I avoid mixing separate changes here. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/mdt.c')
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