f2fs: check its block allocation to avoid producing wrong dirty pages
If a page is cached but its block was deallocated, we don't need to make the page dirty again by gc and truncate_partial_data_page. In that case, it needs to check its block allocation all the time instead of giving up-to-date page. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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2bca1e2388
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b7f204cca4
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@ -813,11 +813,19 @@ struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync)
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.rw = sync ? READ_SYNC : READA,
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};
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/*
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* If sync is false, it needs to check its block allocation.
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* This is need and triggered by two flows:
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* gc and truncate_partial_data_page.
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*/
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if (!sync)
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goto search;
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page = find_get_page(mapping, index);
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if (page && PageUptodate(page))
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return page;
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f2fs_put_page(page, 0);
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search:
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if (f2fs_lookup_extent_cache(inode, index, &ei)) {
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dn.data_blkaddr = ei.blk + index - ei.fofs;
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goto got_it;
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