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| author | Chris Mason <chris.mason@oracle.com> | 2008-02-07 15:50:54 (GMT) |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 15:04:00 (GMT) |
| commit | a86c12c73d982c545a37a8ecdd66528ab260b770 (patch) | |
| tree | d9e28c7d805c3d5ad0c885a46abe60b7d7aaec3d /fs | |
| parent | 961d023213b94861480f5d6533f7adc8332eb527 (diff) | |
| download | linux-a86c12c73d982c545a37a8ecdd66528ab260b770.tar.xz | |
Btrfs: Create larger bios for btree blocks
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/disk-io.c | 10 | ||||
| -rw-r--r-- | fs/btrfs/extent_io.c | 12 | ||||
| -rw-r--r-- | fs/btrfs/extent_io.h | 3 |
3 files changed, 17 insertions, 8 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index dda8ad6..6f0825b 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -197,7 +197,8 @@ int csum_dirty_buffer(struct btrfs_root *root, struct page *page) WARN_ON(1); } eb = alloc_extent_buffer(tree, start, len, page, GFP_NOFS); - read_extent_buffer_pages(tree, eb, start + PAGE_CACHE_SIZE, 1); + read_extent_buffer_pages(tree, eb, start + PAGE_CACHE_SIZE, 1, + btree_get_extent); btrfs_clear_buffer_defrag(eb); found_start = btrfs_header_bytenr(eb); if (found_start != start) { @@ -339,7 +340,7 @@ int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize) if (!buf) return 0; read_extent_buffer_pages(&BTRFS_I(btree_inode)->io_tree, - buf, 0, 0); + buf, 0, 0, btree_get_extent); free_extent_buffer(buf); return ret; } @@ -358,7 +359,8 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr, buf = btrfs_find_create_tree_block(root, bytenr, blocksize); if (!buf) return NULL; - read_extent_buffer_pages(&BTRFS_I(btree_inode)->io_tree, buf, 0, 1); + read_extent_buffer_pages(&BTRFS_I(btree_inode)->io_tree, buf, 0, 1, + btree_get_extent); if (buf->flags & EXTENT_CSUM) return buf; @@ -1009,7 +1011,7 @@ int btrfs_read_buffer(struct extent_buffer *buf) struct btrfs_root *root = BTRFS_I(buf->first_page->mapping->host)->root; struct inode *btree_inode = root->fs_info->btree_inode; return read_extent_buffer_pages(&BTRFS_I(btree_inode)->io_tree, - buf, 0, 1); + buf, 0, 1, btree_get_extent); } static struct extent_io_ops btree_extent_io_ops = { diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index b68e57f..fcae999 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2859,8 +2859,8 @@ EXPORT_SYMBOL(extent_buffer_uptodate); int read_extent_buffer_pages(struct extent_io_tree *tree, struct extent_buffer *eb, - u64 start, - int wait) + u64 start, int wait, + get_extent_t *get_extent) { unsigned long i; unsigned long start_i; @@ -2868,6 +2868,8 @@ int read_extent_buffer_pages(struct extent_io_tree *tree, int err; int ret = 0; unsigned long num_pages; + struct bio *bio = NULL; + if (eb->flags & EXTENT_UPTODATE) return 0; @@ -2899,7 +2901,8 @@ int read_extent_buffer_pages(struct extent_io_tree *tree, lock_page(page); } if (!PageUptodate(page)) { - err = page->mapping->a_ops->readpage(NULL, page); + err = __extent_read_full_page(tree, page, + get_extent, &bio); if (err) { ret = err; } @@ -2908,6 +2911,9 @@ int read_extent_buffer_pages(struct extent_io_tree *tree, } } + if (bio) + submit_one_bio(READ, bio); + if (ret || !wait) { return ret; } diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index 160da3f..151fdad 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -157,7 +157,8 @@ struct extent_buffer *find_extent_buffer(struct extent_io_tree *tree, gfp_t mask); void free_extent_buffer(struct extent_buffer *eb); int read_extent_buffer_pages(struct extent_io_tree *tree, - struct extent_buffer *eb, u64 start, int wait); + struct extent_buffer *eb, u64 start, int wait, + get_extent_t *get_extent); static inline void extent_buffer_get(struct extent_buffer *eb) { |