diff options
Diffstat (limited to 'fs/btrfs/extent_io.c')
-rw-r--r-- | fs/btrfs/extent_io.c | 62 |
1 files changed, 10 insertions, 52 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 56d32bb462f9..51fc015c7d2c 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -4106,14 +4106,13 @@ int extent_write_locked_range(struct inode *inode, u64 start, u64 end, return ret; } -int extent_writepages(struct extent_io_tree *tree, - struct address_space *mapping, +int extent_writepages(struct address_space *mapping, struct writeback_control *wbc) { int ret = 0; struct extent_page_data epd = { .bio = NULL, - .tree = tree, + .tree = &BTRFS_I(mapping->host)->io_tree, .extent_locked = 0, .sync_io = wbc->sync_mode == WB_SYNC_ALL, }; @@ -4123,9 +4122,8 @@ int extent_writepages(struct extent_io_tree *tree, return ret; } -int extent_readpages(struct extent_io_tree *tree, - struct address_space *mapping, - struct list_head *pages, unsigned nr_pages) +int extent_readpages(struct address_space *mapping, struct list_head *pages, + unsigned nr_pages) { struct bio *bio = NULL; unsigned page_idx; @@ -4133,6 +4131,7 @@ int extent_readpages(struct extent_io_tree *tree, struct page *pagepool[16]; struct page *page; struct extent_map *em_cached = NULL; + struct extent_io_tree *tree = &BTRFS_I(mapping->host)->io_tree; int nr = 0; u64 prev_em_start = (u64)-1; @@ -4199,8 +4198,7 @@ int extent_invalidatepage(struct extent_io_tree *tree, * are locked or under IO and drops the related state bits if it is safe * to drop the page. */ -static int try_release_extent_state(struct extent_map_tree *map, - struct extent_io_tree *tree, +static int try_release_extent_state(struct extent_io_tree *tree, struct page *page, gfp_t mask) { u64 start = page_offset(page); @@ -4235,13 +4233,13 @@ static int try_release_extent_state(struct extent_map_tree *map, * in the range corresponding to the page, both state records and extent * map records are removed */ -int try_release_extent_mapping(struct extent_map_tree *map, - struct extent_io_tree *tree, struct page *page, - gfp_t mask) +int try_release_extent_mapping(struct page *page, gfp_t mask) { struct extent_map *em; u64 start = page_offset(page); u64 end = start + PAGE_SIZE - 1; + struct extent_io_tree *tree = &BTRFS_I(page->mapping->host)->io_tree; + struct extent_map_tree *map = &BTRFS_I(page->mapping->host)->extent_tree; if (gfpflags_allow_blocking(mask) && page->mapping->host->i_size > SZ_16M) { @@ -4275,7 +4273,7 @@ int try_release_extent_mapping(struct extent_map_tree *map, free_extent_map(em); } } - return try_release_extent_state(map, tree, page, mask); + return try_release_extent_state(tree, page, mask); } /* @@ -5617,46 +5615,6 @@ void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src, } } -void le_bitmap_set(u8 *map, unsigned int start, int len) -{ - u8 *p = map + BIT_BYTE(start); - const unsigned int size = start + len; - int bits_to_set = BITS_PER_BYTE - (start % BITS_PER_BYTE); - u8 mask_to_set = BITMAP_FIRST_BYTE_MASK(start); - - while (len - bits_to_set >= 0) { - *p |= mask_to_set; - len -= bits_to_set; - bits_to_set = BITS_PER_BYTE; - mask_to_set = ~0; - p++; - } - if (len) { - mask_to_set &= BITMAP_LAST_BYTE_MASK(size); - *p |= mask_to_set; - } -} - -void le_bitmap_clear(u8 *map, unsigned int start, int len) -{ - u8 *p = map + BIT_BYTE(start); - const unsigned int size = start + len; - int bits_to_clear = BITS_PER_BYTE - (start % BITS_PER_BYTE); - u8 mask_to_clear = BITMAP_FIRST_BYTE_MASK(start); - - while (len - bits_to_clear >= 0) { - *p &= ~mask_to_clear; - len -= bits_to_clear; - bits_to_clear = BITS_PER_BYTE; - mask_to_clear = ~0; - p++; - } - if (len) { - mask_to_clear &= BITMAP_LAST_BYTE_MASK(size); - *p &= ~mask_to_clear; - } -} - /* * eb_bitmap_offset() - calculate the page and offset of the byte containing the * given bit number |