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f2fs: return -EIO when node id is not matched

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During the cleaing of node segments, F2FS can get errored node blocks due to
data race between node page lock and its valid bitmap operations.
In that case, it needs to return an error to skip such the obsolete block copy.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim
2014-04-01 17:38:26 +09:00
parent 808a1d7490
commit 3bb5e2c8fe
1 changed files with 1 additions and 2 deletions
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3
fs/f2fs/node.c
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@@ -958,7 +958,7 @@ struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid)
goto got_it;
lock_page(page);
if (unlikely(!PageUptodate(page))) {
if (unlikely(!PageUptodate(page) || nid != nid_of_node(page))) {
f2fs_put_page(page, 1);
return ERR_PTR(-EIO);
}
@@ -967,7 +967,6 @@ struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid)
goto repeat;
}
got_it:
f2fs_bug_on(nid != nid_of_node(page));
mark_page_accessed(page);
return page;
}