diff options
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 47 |
1 files changed, 41 insertions, 6 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 640648c66b2..8a405a5fa6a 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -303,6 +303,10 @@ int btrfs_set_bit_hook(struct inode *inode, u64 start, u64 end, spin_lock_irqsave(&root->fs_info->delalloc_lock, flags); BTRFS_I(inode)->delalloc_bytes += end - start + 1; root->fs_info->delalloc_bytes += end - start + 1; + if (list_empty(&BTRFS_I(inode)->delalloc_inodes)) { + list_add_tail(&BTRFS_I(inode)->delalloc_inodes, + &root->fs_info->delalloc_inodes); + } spin_unlock_irqrestore(&root->fs_info->delalloc_lock, flags); } return 0; @@ -325,6 +329,10 @@ int btrfs_clear_bit_hook(struct inode *inode, u64 start, u64 end, root->fs_info->delalloc_bytes -= end - start + 1; BTRFS_I(inode)->delalloc_bytes -= end - start + 1; } + if (BTRFS_I(inode)->delalloc_bytes == 0 && + !list_empty(&BTRFS_I(inode)->delalloc_inodes)) { + list_del_init(&BTRFS_I(inode)->delalloc_inodes); + } spin_unlock_irqrestore(&root->fs_info->delalloc_lock, flags); } return 0; @@ -408,6 +416,12 @@ static noinline int add_pending_csums(struct btrfs_trans_handle *trans, return 0; } +int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end) +{ + return set_extent_delalloc(&BTRFS_I(inode)->io_tree, start, end, + GFP_NOFS); +} + struct btrfs_writepage_fixup { struct page *page; struct btrfs_work work; @@ -453,8 +467,7 @@ again: goto again; } - set_extent_delalloc(&BTRFS_I(inode)->io_tree, page_start, page_end, - GFP_NOFS); + btrfs_set_extent_delalloc(inode, page_start, page_end); ClearPageChecked(page); out: unlock_extent(&BTRFS_I(inode)->io_tree, page_start, page_end, GFP_NOFS); @@ -1530,8 +1543,7 @@ again: goto again; } - set_extent_delalloc(&BTRFS_I(inode)->io_tree, page_start, - page_end, GFP_NOFS); + btrfs_set_extent_delalloc(inode, page_start, page_end); ret = 0; if (offset != PAGE_CACHE_SIZE) { kaddr = kmap(page); @@ -1766,6 +1778,7 @@ static int btrfs_init_locked_inode(struct inode *inode, void *p) inode->i_mapping, GFP_NOFS); extent_io_tree_init(&BTRFS_I(inode)->io_failure_tree, inode->i_mapping, GFP_NOFS); + INIT_LIST_HEAD(&BTRFS_I(inode)->delalloc_inodes); btrfs_ordered_inode_tree_init(&BTRFS_I(inode)->ordered_tree); mutex_init(&BTRFS_I(inode)->csum_mutex); mutex_init(&BTRFS_I(inode)->extent_mutex); @@ -2158,6 +2171,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, extent_io_tree_init(&BTRFS_I(inode)->io_failure_tree, inode->i_mapping, GFP_NOFS); btrfs_ordered_inode_tree_init(&BTRFS_I(inode)->ordered_tree); + INIT_LIST_HEAD(&BTRFS_I(inode)->delalloc_inodes); mutex_init(&BTRFS_I(inode)->csum_mutex); mutex_init(&BTRFS_I(inode)->extent_mutex); BTRFS_I(inode)->delalloc_bytes = 0; @@ -2400,6 +2414,7 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry, inode->i_mapping, GFP_NOFS); extent_io_tree_init(&BTRFS_I(inode)->io_failure_tree, inode->i_mapping, GFP_NOFS); + INIT_LIST_HEAD(&BTRFS_I(inode)->delalloc_inodes); mutex_init(&BTRFS_I(inode)->csum_mutex); mutex_init(&BTRFS_I(inode)->extent_mutex); BTRFS_I(inode)->delalloc_bytes = 0; @@ -3049,8 +3064,7 @@ again: goto again; } - set_extent_delalloc(&BTRFS_I(inode)->io_tree, page_start, - page_end, GFP_NOFS); + btrfs_set_extent_delalloc(inode, page_start, page_end); ret = 0; /* page is wholly or partially inside EOF */ @@ -3373,6 +3387,26 @@ out_unlock: return ret; } +int btrfs_start_delalloc_inodes(struct btrfs_root *root) +{ + struct list_head *head = &root->fs_info->delalloc_inodes; + struct btrfs_inode *binode; + unsigned long flags; + + spin_lock_irqsave(&root->fs_info->delalloc_lock, flags); + while(!list_empty(head)) { + binode = list_entry(head->next, struct btrfs_inode, + delalloc_inodes); + atomic_inc(&binode->vfs_inode.i_count); + spin_unlock_irqrestore(&root->fs_info->delalloc_lock, flags); + filemap_write_and_wait(binode->vfs_inode.i_mapping); + iput(&binode->vfs_inode); + spin_lock_irqsave(&root->fs_info->delalloc_lock, flags); + } + spin_unlock_irqrestore(&root->fs_info->delalloc_lock, flags); + return 0; +} + static int btrfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) { @@ -3436,6 +3470,7 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry, inode->i_mapping, GFP_NOFS); extent_io_tree_init(&BTRFS_I(inode)->io_failure_tree, inode->i_mapping, GFP_NOFS); + INIT_LIST_HEAD(&BTRFS_I(inode)->delalloc_inodes); mutex_init(&BTRFS_I(inode)->csum_mutex); mutex_init(&BTRFS_I(inode)->extent_mutex); BTRFS_I(inode)->delalloc_bytes = 0; |