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f2fs: check node id earily when readaheading node page 

Add node id check in ra_node_page and get_node_page_ra like get_node_page.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
hifive-unleashed-5.1
Chao Yu 2016-01-08 20:13:37 +08:00 committed by Jaegeuk Kim
parent de1475cc53
commit e84587250a
1 changed files with 8 additions and 3 deletions
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11
fs/f2fs/node.c
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@ -1041,6 +1041,10 @@ void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid)
struct page *apage;
int err;
if (!nid)
return;
f2fs_bug_on(sbi, check_nid_range(sbi, nid));
apage = find_get_page(NODE_MAPPING(sbi), nid);
if (apage && PageUptodate(apage)) {
f2fs_put_page(apage, 0);
@ -1108,6 +1112,7 @@ struct page *get_node_page_ra(struct page *parent, int start)
nid = get_nid(parent, start, false);
if (!nid)
return ERR_PTR(-ENOENT);
f2fs_bug_on(sbi, check_nid_range(sbi, nid));
repeat:
page = grab_cache_page(NODE_MAPPING(sbi), nid);
if (!page)
@ -1127,9 +1132,9 @@ repeat:
end = start + MAX_RA_NODE;
end = min(end, NIDS_PER_BLOCK);
for (i = start + 1; i < end; i++) {
nid_t tnid = get_nid(parent, i, false);
if (!tnid)
continue;
nid_t tnid;
tnid = get_nid(parent, i, false);
ra_node_page(sbi, tnid);
}