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| author | Sven Wegener <sven.wegener@stealer.net> | 2008-07-30 16:54:26 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:04:05 -0400 |
| commit | 0ee0fda06b943d7ef65f3cec50ab9d427a2baf97 (patch) | |
| tree | 342ac5337dc72cf18b683f7f79b497db98a6062e /fs/btrfs/extent_io.c | |
| parent | bcc63abbf3e9bf948a1b0129b3e6120ec7d7f698 (diff) | |
| download | op-kernel-dev-0ee0fda06b943d7ef65f3cec50ab9d427a2baf97.zip op-kernel-dev-0ee0fda06b943d7ef65f3cec50ab9d427a2baf97.tar.gz | |
Btrfs: Add compatibility for kernels >= 2.6.27-rc1
Add a couple of #if's to follow API changes.
Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent_io.c')
| -rw-r--r-- | fs/btrfs/extent_io.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 5368e3b..1cf4bab 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2649,9 +2649,24 @@ static inline struct page *extent_buffer_page(struct extent_buffer *eb, mapping = eb->first_page->mapping; if (!mapping) return NULL; + + /* + * extent_buffer_page is only called after pinning the page + * by increasing the reference count. So we know the page must + * be in the radix tree. + */ +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,26) + rcu_read_lock(); +#else read_lock_irq(&mapping->tree_lock); +#endif p = radix_tree_lookup(&mapping->page_tree, i); + +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,26) + rcu_read_unlock(); +#else read_unlock_irq(&mapping->tree_lock); +#endif return p; } @@ -2843,13 +2858,21 @@ int clear_extent_buffer_dirty(struct extent_io_tree *tree, } } clear_page_dirty_for_io(page); +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,26) + spin_lock_irq(&page->mapping->tree_lock); +#else read_lock_irq(&page->mapping->tree_lock); +#endif if (!PageDirty(page)) { radix_tree_tag_clear(&page->mapping->page_tree, page_index(page), PAGECACHE_TAG_DIRTY); } +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,26) + spin_unlock_irq(&page->mapping->tree_lock); +#else read_unlock_irq(&page->mapping->tree_lock); +#endif unlock_page(page); } return 0; |
