45 #define mark_metapage_dirty(mp) set_bit(META_dirty, &(mp)->flag)  argument
72 static inline void write_metapage(struct metapage *mp)  in write_metapage()  argument
74 	set_bit(META_dirty, &mp->flag);  in write_metapage()
75 	release_metapage(mp);  in write_metapage()
78 static inline void flush_metapage(struct metapage *mp)  in flush_metapage()  argument
80 	set_bit(META_sync, &mp->flag);  in flush_metapage()
81 	write_metapage(mp);  in flush_metapage()
84 static inline void discard_metapage(struct metapage *mp)  in discard_metapage()  argument
86 	clear_bit(META_dirty, &mp->flag);  in discard_metapage()
87 	set_bit(META_discard, &mp->flag);  in discard_metapage()
88 	release_metapage(mp);  in discard_metapage()
91 static inline void metapage_nohomeok(struct metapage *mp)  in metapage_nohomeok()  argument
93 	struct page *page = mp->page;  in metapage_nohomeok()
95 	if (!mp->nohomeok++) {  in metapage_nohomeok()
96 		mark_metapage_dirty(mp);  in metapage_nohomeok()
107 static inline void metapage_wait_for_io(struct metapage *mp)  in metapage_wait_for_io()  argument
109 	if (test_bit(META_io, &mp->flag))  in metapage_wait_for_io()
110 		wait_on_page_writeback(mp->page);  in metapage_wait_for_io()
116 static inline void _metapage_homeok(struct metapage *mp)  in _metapage_homeok()  argument
118 	if (!--mp->nohomeok)  in _metapage_homeok()
119 		put_page(mp->page);  in _metapage_homeok()
122 static inline void metapage_homeok(struct metapage *mp)  in metapage_homeok()  argument
124 	hold_metapage(mp);  in metapage_homeok()
125 	_metapage_homeok(mp);  in metapage_homeok()
126 	put_metapage(mp);  in metapage_homeok()