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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-11-06 01:00:48 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-11-20 10:05:47 +0900 |
| commit | 9cb4e0d2b99e8b0e5e269d898ae6ab1967647c5a (patch) | |
| tree | 09ac1daa4985b4717afc818f89cfe2439664b44a /fs/nilfs2/bmap.c | |
| parent | 09bf4aae0a3c471b721c43e7bdb6132200d907b2 (diff) | |
| download | linux-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/bmap.c')
| -rw-r--r-- | fs/nilfs2/bmap.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c index afc060abd5ab..f4a14ea2ed9c 100644 --- a/fs/nilfs2/bmap.c +++ b/fs/nilfs2/bmap.c @@ -402,15 +402,11 @@ int nilfs_bmap_test_and_clear_dirty(struct nilfs_bmap *bmap) void nilfs_bmap_add_blocks(const struct nilfs_bmap *bmap, int n) { inode_add_bytes(bmap->b_inode, (1 << bmap->b_inode->i_blkbits) * n); - if (!NILFS_MDT(bmap->b_inode)) - mark_inode_dirty(bmap->b_inode); } void nilfs_bmap_sub_blocks(const struct nilfs_bmap *bmap, int n) { inode_sub_bytes(bmap->b_inode, (1 << bmap->b_inode->i_blkbits) * n); - if (!NILFS_MDT(bmap->b_inode)) - mark_inode_dirty(bmap->b_inode); } __u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *bmap, |