| page.c (7eef4091a653c243a87e5375c54504cc03bec4d8) | page.c (7a65004bbaa6a21a0438aac9c64814e46084dc3f) |
|---|---|
| 1/* 2 * page.c - buffer/page management specific to NILFS 3 * 4 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or --- 278 unchanged lines hidden (view full) --- 287} 288 289/** 290 * nilfs_copy_page -- copy the page with buffers 291 * @dst: destination page 292 * @src: source page 293 * @copy_dirty: flag whether to copy dirty states on the page's buffer heads. 294 * | 1/* 2 * page.c - buffer/page management specific to NILFS 3 * 4 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or --- 278 unchanged lines hidden (view full) --- 287} 288 289/** 290 * nilfs_copy_page -- copy the page with buffers 291 * @dst: destination page 292 * @src: source page 293 * @copy_dirty: flag whether to copy dirty states on the page's buffer heads. 294 * |
| 295 * This fuction is for both data pages and btnode pages. The dirty flag | 295 * This function is for both data pages and btnode pages. The dirty flag |
| 296 * should be treated by caller. The page must not be under i/o. 297 * Both src and dst page must be locked 298 */ 299static void nilfs_copy_page(struct page *dst, struct page *src, int copy_dirty) 300{ 301 struct buffer_head *dbh, *dbufs, *sbh, *sbufs; 302 unsigned long mask = NILFS_BUFFER_INHERENT_BITS; 303 --- 79 unchanged lines hidden (view full) --- 383 cond_resched(); 384 385 if (likely(!err)) 386 goto repeat; 387 return err; 388} 389 390/** | 296 * should be treated by caller. The page must not be under i/o. 297 * Both src and dst page must be locked 298 */ 299static void nilfs_copy_page(struct page *dst, struct page *src, int copy_dirty) 300{ 301 struct buffer_head *dbh, *dbufs, *sbh, *sbufs; 302 unsigned long mask = NILFS_BUFFER_INHERENT_BITS; 303 --- 79 unchanged lines hidden (view full) --- 383 cond_resched(); 384 385 if (likely(!err)) 386 goto repeat; 387 return err; 388} 389 390/** |
| 391 * nilfs_copy_back_pages -- copy back pages to orignal cache from shadow cache | 391 * nilfs_copy_back_pages -- copy back pages to original cache from shadow cache |
| 392 * @dmap: destination page cache 393 * @smap: source page cache 394 * 395 * No pages must no be added to the cache during this process. 396 * This must be ensured by the caller. 397 */ 398void nilfs_copy_back_pages(struct address_space *dmap, 399 struct address_space *smap) --- 142 unchanged lines hidden --- | 392 * @dmap: destination page cache 393 * @smap: source page cache 394 * 395 * No pages must no be added to the cache during this process. 396 * This must be ensured by the caller. 397 */ 398void nilfs_copy_back_pages(struct address_space *dmap, 399 struct address_space *smap) --- 142 unchanged lines hidden --- |