INLINE_EXTENT_BUFFER_PAGES  157 fs/btrfs/extent_io.h #define MAX_INLINE_EXTENT_BUFFER_SIZE (INLINE_EXTENT_BUFFER_PAGES * PAGE_SIZE)
INLINE_EXTENT_BUFFER_PAGES  188 fs/btrfs/extent_io.h 	struct page *pages[INLINE_EXTENT_BUFFER_PAGES];