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authorNamjae Jeon <namjae.jeon@samsung.com>2013-06-08 14:25:40 +0200
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2013-06-14 02:04:42 +0200
commitd7cc950b4c910e4440485be784493880a0d09086 (patch)
treead61daad74fa7f6fd0153cf9597bfc8b2e0710b4 /fs
parentf2fs: use the F2FS specific flags in f2fs_ioctl() (diff)
downloadlinux-d7cc950b4c910e4440485be784493880a0d09086.tar.xz
linux-d7cc950b4c910e4440485be784493880a0d09086.zip
f2fs: optimise the truncate_data_blocks_range() range
The function truncate_data_blocks_range() decrements the valid block count of inode via dec_valid_block_count(). Since this function updates the i_blocks field of inode, we can update this field once we have calculated total the number of blocks to be freed. Therefore we can decrement valid blocks outside of the for loop. if (nr_free) { + dec_valid_block_count(sbi, dn->inode, nr_free); set_page_dirty(dn->node_page); sync_inode_page(dn); } 'nr_free' tells the total number of blocks freed. So, we can just directly pass this value to dec_valid_block_count() and update the i_blocks. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/f2fs/file.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 85b665d176a2..2f649b848521 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -185,10 +185,10 @@ int truncate_data_blocks_range(struct dnode_of_data *dn, int count)
update_extent_cache(NULL_ADDR, dn);
invalidate_blocks(sbi, blkaddr);
- dec_valid_block_count(sbi, dn->inode, 1);
nr_free++;
}
if (nr_free) {
+ dec_valid_block_count(sbi, dn->inode, nr_free);
set_page_dirty(dn->node_page);
sync_inode_page(dn);
}