[PATCH] NTFS: Critical bug fix (affects MIPS and possibly others)
Many thanks to Pauline Ng for the detailed bug report and analysis! Signed-off-by: Anton Altaparmakov <aia21@cantab.net> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -1484,14 +1484,15 @@ static inline void ntfs_flush_dcache_pages(struct page **pages,
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unsigned nr_pages)
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unsigned nr_pages)
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{
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{
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BUG_ON(!nr_pages);
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BUG_ON(!nr_pages);
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/*
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* Warning: Do not do the decrement at the same time as the call to
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* flush_dcache_page() because it is a NULL macro on i386 and hence the
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* decrement never happens so the loop never terminates.
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*/
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do {
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do {
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/*
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--nr_pages;
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* Warning: Do not do the decrement at the same time as the
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* call because flush_dcache_page() is a NULL macro on i386
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* and hence the decrement never happens.
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*/
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flush_dcache_page(pages[nr_pages]);
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flush_dcache_page(pages[nr_pages]);
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} while (--nr_pages > 0);
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} while (nr_pages > 0);
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}
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}
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/**
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/**
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