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UBIFS: use PAGE_CACHE_MASK correctly
It has high bits set, not low bits set as the UBIFS code assumed. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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@ -254,7 +254,7 @@ static int write_begin_slow(struct address_space *mapping,
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}
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if (!PageUptodate(page)) {
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if (!(pos & PAGE_CACHE_MASK) && len == PAGE_CACHE_SIZE)
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if (!(pos & ~PAGE_CACHE_MASK) && len == PAGE_CACHE_SIZE)
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SetPageChecked(page);
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else {
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err = do_readpage(page);
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@ -444,7 +444,7 @@ static int ubifs_write_begin(struct file *file, struct address_space *mapping,
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if (!PageUptodate(page)) {
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/* The page is not loaded from the flash */
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if (!(pos & PAGE_CACHE_MASK) && len == PAGE_CACHE_SIZE)
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if (!(pos & ~PAGE_CACHE_MASK) && len == PAGE_CACHE_SIZE)
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/*
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* We change whole page so no need to load it. But we
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* have to set the @PG_checked flag to make the further
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