Lines Matching refs:page
49 unlock_page(mp->page); in __lock_metapage()
51 lock_page(mp->page); in __lock_metapage()
80 #define mp_anchor(page) ((struct meta_anchor *)page_private(page)) argument
82 static inline struct metapage *page_to_mp(struct page *page, int offset) in page_to_mp() argument
84 if (!PagePrivate(page)) in page_to_mp()
86 return mp_anchor(page)->mp[offset >> L2PSIZE]; in page_to_mp()
89 static inline int insert_metapage(struct page *page, struct metapage *mp) in insert_metapage() argument
95 if (PagePrivate(page)) in insert_metapage()
96 a = mp_anchor(page); in insert_metapage()
101 set_page_private(page, (unsigned long)a); in insert_metapage()
102 SetPagePrivate(page); in insert_metapage()
103 kmap(page); in insert_metapage()
107 l2mp_blocks = L2PSIZE - page->mapping->host->i_blkbits; in insert_metapage()
116 static inline void remove_metapage(struct page *page, struct metapage *mp) in remove_metapage() argument
118 struct meta_anchor *a = mp_anchor(page); in remove_metapage()
119 int l2mp_blocks = L2PSIZE - page->mapping->host->i_blkbits; in remove_metapage()
129 set_page_private(page, 0); in remove_metapage()
130 ClearPagePrivate(page); in remove_metapage()
131 kunmap(page); in remove_metapage()
135 static inline void inc_io(struct page *page) in inc_io() argument
137 atomic_inc(&mp_anchor(page)->io_count); in inc_io()
140 static inline void dec_io(struct page *page, void (*handler) (struct page *)) in dec_io() argument
142 if (atomic_dec_and_test(&mp_anchor(page)->io_count)) in dec_io()
143 handler(page); in dec_io()
147 static inline struct metapage *page_to_mp(struct page *page, int offset) in page_to_mp() argument
149 return PagePrivate(page) ? (struct metapage *)page_private(page) : NULL; in page_to_mp()
152 static inline int insert_metapage(struct page *page, struct metapage *mp) in insert_metapage() argument
155 set_page_private(page, (unsigned long)mp); in insert_metapage()
156 SetPagePrivate(page); in insert_metapage()
157 kmap(page); in insert_metapage()
162 static inline void remove_metapage(struct page *page, struct metapage *mp) in remove_metapage() argument
164 set_page_private(page, 0); in remove_metapage()
165 ClearPagePrivate(page); in remove_metapage()
166 kunmap(page); in remove_metapage()
169 #define inc_io(page) do {} while(0) argument
170 #define dec_io(page, handler) handler(page) argument
221 static inline void drop_metapage(struct page *page, struct metapage *mp) in drop_metapage() argument
226 remove_metapage(page, mp); in drop_metapage()
260 static void last_read_complete(struct page *page) in last_read_complete() argument
262 if (!PageError(page)) in last_read_complete()
263 SetPageUptodate(page); in last_read_complete()
264 unlock_page(page); in last_read_complete()
269 struct page *page = bio->bi_private; in metapage_read_end_io() local
273 SetPageError(page); in metapage_read_end_io()
276 dec_io(page, last_read_complete); in metapage_read_end_io()
302 static void last_write_complete(struct page *page) in last_write_complete() argument
308 mp = page_to_mp(page, offset); in last_write_complete()
319 end_page_writeback(page); in last_write_complete()
324 struct page *page = bio->bi_private; in metapage_write_end_io() local
326 BUG_ON(!PagePrivate(page)); in metapage_write_end_io()
330 SetPageError(page); in metapage_write_end_io()
332 dec_io(page, last_write_complete); in metapage_write_end_io()
336 static int metapage_writepage(struct page *page, struct writeback_control *wbc) in metapage_writepage() argument
340 struct inode *inode = page->mapping->host; in metapage_writepage()
356 page_start = (sector_t)page->index << in metapage_writepage()
358 BUG_ON(!PageLocked(page)); in metapage_writepage()
359 BUG_ON(PageWriteback(page)); in metapage_writepage()
360 set_page_writeback(page); in metapage_writepage()
363 mp = page_to_mp(page, offset); in metapage_writepage()
392 if (bio_add_page(bio, page, bio_bytes, bio_offset) < in metapage_writepage()
399 inc_io(page); in metapage_writepage()
406 inc_io(page); in metapage_writepage()
424 bio->bi_private = page; in metapage_writepage()
435 if (bio_add_page(bio, page, bio_bytes, bio_offset) < bio_bytes) in metapage_writepage()
444 redirty_page_for_writepage(wbc, page); in metapage_writepage()
446 unlock_page(page); in metapage_writepage()
452 end_page_writeback(page); in metapage_writepage()
464 unlock_page(page); in metapage_writepage()
465 dec_io(page, last_write_complete); in metapage_writepage()
468 dec_io(page, last_write_complete); in metapage_writepage()
472 static int metapage_readpage(struct file *fp, struct page *page) in metapage_readpage() argument
474 struct inode *inode = page->mapping->host; in metapage_readpage()
477 int blocks_per_page = i_blocks_per_page(inode, page); in metapage_readpage()
484 BUG_ON(!PageLocked(page)); in metapage_readpage()
485 page_start = (sector_t)page->index << in metapage_readpage()
494 if (!PagePrivate(page)) in metapage_readpage()
495 insert_metapage(page, NULL); in metapage_readpage()
496 inc_io(page); in metapage_readpage()
505 bio->bi_private = page; in metapage_readpage()
509 if (bio_add_page(bio, page, len, offset) < len) in metapage_readpage()
518 unlock_page(page); in metapage_readpage()
525 dec_io(page, last_read_complete); in metapage_readpage()
529 static int metapage_releasepage(struct page *page, gfp_t gfp_mask) in metapage_releasepage() argument
536 mp = page_to_mp(page, offset); in metapage_releasepage()
551 remove_metapage(page, mp); in metapage_releasepage()
558 static void metapage_invalidatepage(struct page *page, unsigned int offset, in metapage_invalidatepage() argument
563 BUG_ON(PageWriteback(page)); in metapage_invalidatepage()
565 metapage_releasepage(page, 0); in metapage_invalidatepage()
584 struct page *page; in __get_metapage() local
615 page = grab_cache_page(mapping, page_index); in __get_metapage()
616 if (!page) { in __get_metapage()
620 SetPageUptodate(page); in __get_metapage()
622 page = read_mapping_page(mapping, page_index, NULL); in __get_metapage()
623 if (IS_ERR(page) || !PageUptodate(page)) { in __get_metapage()
627 lock_page(page); in __get_metapage()
630 mp = page_to_mp(page, page_offset); in __get_metapage()
656 mp->page = page; in __get_metapage()
663 mp->data = page_address(page) + page_offset; in __get_metapage()
665 if (unlikely(insert_metapage(page, mp))) { in __get_metapage()
677 unlock_page(page); in __get_metapage()
682 unlock_page(page); in __get_metapage()
689 get_page(mp->page); in grab_metapage()
690 lock_page(mp->page); in grab_metapage()
693 unlock_page(mp->page); in grab_metapage()
698 struct page *page = mp->page; in force_metapage() local
702 get_page(page); in force_metapage()
703 lock_page(page); in force_metapage()
704 set_page_dirty(page); in force_metapage()
705 if (write_one_page(page)) in force_metapage()
708 put_page(page); in force_metapage()
713 lock_page(mp->page); in hold_metapage()
720 unlock_page(mp->page); in put_metapage()
723 get_page(mp->page); in put_metapage()
726 unlock_page(mp->page); in put_metapage()
732 struct page *page = mp->page; in release_metapage() local
735 BUG_ON(!page); in release_metapage()
737 lock_page(page); in release_metapage()
742 unlock_page(page); in release_metapage()
743 put_page(page); in release_metapage()
748 set_page_dirty(page); in release_metapage()
751 if (write_one_page(page)) in release_metapage()
753 lock_page(page); /* write_one_page unlocks the page */ in release_metapage()
759 drop_metapage(page, mp); in release_metapage()
761 unlock_page(page); in release_metapage()
762 put_page(page); in release_metapage()
774 struct page *page; in __invalidate_metapages() local
783 page = find_lock_page(mapping, lblock >> l2BlocksPerPage); in __invalidate_metapages()
784 if (!page) in __invalidate_metapages()
787 mp = page_to_mp(page, offset); in __invalidate_metapages()
800 unlock_page(page); in __invalidate_metapages()
801 put_page(page); in __invalidate_metapages()