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f2fs: skip get_node_page if locked node page is passed

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If get_dnode_of_data gets a locked node page, let's skip redundant
get_node_page calls.
This is for the futher enhancement.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim 2013-05-20 09:42:28 +09:00
parent 0a364af18f
commit 1646cfac95
1 changed files with 6 additions and 3 deletions
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9
fs/f2fs/node.c
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@ -408,10 +408,13 @@ int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode)
level = get_node_path(index, offset, noffset);
nids[0] = dn->inode->i_ino;
npage[0] = get_node_page(sbi, nids[0]);
if (IS_ERR(npage[0]))
return PTR_ERR(npage[0]);
npage[0] = dn->inode_page;
if (!npage[0]) {
npage[0] = get_node_page(sbi, nids[0]);
if (IS_ERR(npage[0]))
return PTR_ERR(npage[0]);
}
parent = npage[0];
if (level != 0)
nids[1] = get_nid(parent, offset[0], true);