ocfs2: Fix deadlock when allocating page
We cannot call grab_cache_page() when holding filesystem locks or with a transaction started as grab_cache_page() calls page allocation with GFP_KERNEL flag and thus page reclaim can recurse back into the filesystem causing deadlocks or various assertion failures. We have to use find_or_create_page() instead and pass it GFP_NOFS as we do with other allocations. Acked-by: NMark Fasheh <mfasheh@suse.com> Signed-off-by: NJan Kara <jack@suse.cz> Signed-off-by: NTao Ma <tao.ma@oracle.com>
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