btrfs: clear __GFP_FS flag in the space cache inode

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / btrfs / inode.c

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 04e9fff..57a03f6 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -111,6 +111,7 @@ static int btrfs_init_inode_security(struct btrfs_trans_handle *trans,
 static noinline int insert_inline_extent(struct btrfs_trans_handle *trans,
                                struct btrfs_root *root, struct inode *inode,
                                u64 start, size_t size, size_t compressed_size,
+                               int compress_type,
                                struct page **compressed_pages)
 {
        struct btrfs_key key;
@@ -125,12 +126,9 @@ static noinline int insert_inline_extent(struct btrfs_trans_handle *trans,
        size_t cur_size = size;
        size_t datasize;
        unsigned long offset;
-       int compress_type = BTRFS_COMPRESS_NONE;
 
-       if (compressed_size && compressed_pages) {
-               compress_type = root->fs_info->compress_type;
+       if (compressed_size && compressed_pages)
                cur_size = compressed_size;
-       }
 
        path = btrfs_alloc_path();
        if (!path)
@@ -220,7 +218,7 @@ fail:
 static noinline int cow_file_range_inline(struct btrfs_trans_handle *trans,
                                 struct btrfs_root *root,
                                 struct inode *inode, u64 start, u64 end,
-                                size_t compressed_size,
+                                size_t compressed_size, int compress_type,
                                 struct page **compressed_pages)
 {
        u64 isize = i_size_read(inode);
@@ -253,7 +251,7 @@ static noinline int cow_file_range_inline(struct btrfs_trans_handle *trans,
                inline_len = min_t(u64, isize, actual_end);
        ret = insert_inline_extent(trans, root, inode, start,
                                   inline_len, compressed_size,
-                                  compressed_pages);
+                                  compress_type, compressed_pages);
        BUG_ON(ret);
        btrfs_delalloc_release_metadata(inode, end + 1 - start);
        btrfs_drop_extent_cache(inode, start, aligned_end - 1, 0);
@@ -432,12 +430,13 @@ again:
                         * to make an uncompressed inline extent.
                         */
                        ret = cow_file_range_inline(trans, root, inode,
-                                                   start, end, 0, NULL);
+                                                   start, end, 0, 0, NULL);
                } else {
                        /* try making a compressed inline extent */
                        ret = cow_file_range_inline(trans, root, inode,
                                                    start, end,
-                                                   total_compressed, pages);
+                                                   total_compressed,
+                                                   compress_type, pages);
                }
                if (ret == 0) {
                        /*
@@ -791,7 +790,7 @@ static noinline int cow_file_range(struct inode *inode,
        if (start == 0) {
                /* lets try to make an inline extent */
                ret = cow_file_range_inline(trans, root, inode,
-                                           start, end, 0, NULL);
+                                           start, end, 0, 0, NULL);
                if (ret == 0) {
                        extent_clear_unlock_delalloc(inode,
                                     &BTRFS_I(inode)->io_tree,
@@ -2664,10 +2663,10 @@ failed:
  * recovery code.  It remove a link in a directory with a given name, and
  * also drops the back refs in the inode to the directory
  */
-int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
-                      struct btrfs_root *root,
-                      struct inode *dir, struct inode *inode,
-                      const char *name, int name_len)
+static int __btrfs_unlink_inode(struct btrfs_trans_handle *trans,
+                               struct btrfs_root *root,
+                               struct inode *dir, struct inode *inode,
+                               const char *name, int name_len)
 {
        struct btrfs_path *path;
        int ret = 0;
@@ -2739,12 +2738,25 @@ err:
        btrfs_i_size_write(dir, dir->i_size - name_len * 2);
        inode->i_ctime = dir->i_mtime = dir->i_ctime = CURRENT_TIME;
        btrfs_update_inode(trans, root, dir);
-       btrfs_drop_nlink(inode);
-       ret = btrfs_update_inode(trans, root, inode);
 out:
        return ret;
 }
 
+int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
+                      struct btrfs_root *root,
+                      struct inode *dir, struct inode *inode,
+                      const char *name, int name_len)
+{
+       int ret;
+       ret = __btrfs_unlink_inode(trans, root, dir, inode, name, name_len);
+       if (!ret) {
+               btrfs_drop_nlink(inode);
+               ret = btrfs_update_inode(trans, root, inode);
+       }
+       return ret;
+}
+               
+
 /* helper to check if there is any shared block in the path */
 static int check_path_shared(struct btrfs_root *root,
                             struct btrfs_path *path)
@@ -4071,7 +4083,6 @@ struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
                BTRFS_I(inode)->root = root;
                memcpy(&BTRFS_I(inode)->location, location, sizeof(*location));
                btrfs_read_locked_inode(inode);
-
                inode_tree_add(inode);
                unlock_new_inode(inode);
                if (new)
@@ -4824,6 +4835,9 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
        if (root->objectid != BTRFS_I(inode)->root->objectid)
                return -EXDEV;
 
+       if (inode->i_nlink == ~0U)
+               return -EMLINK;
+
        btrfs_inc_nlink(inode);
        inode->i_ctime = CURRENT_TIME;
 
@@ -6945,8 +6959,10 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         * should cover the worst case number of items we'll modify.
         */
        trans = btrfs_start_transaction(root, 20);
-       if (IS_ERR(trans))
-               return PTR_ERR(trans);
+       if (IS_ERR(trans)) {
+                ret = PTR_ERR(trans);
+                goto out_notrans;
+        }
 
        btrfs_set_trans_block_group(trans, new_dir);
 
@@ -6999,11 +7015,12 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
                                        old_dentry->d_name.name,
                                        old_dentry->d_name.len);
        } else {
-               btrfs_inc_nlink(old_dentry->d_inode);
-               ret = btrfs_unlink_inode(trans, root, old_dir,
-                                        old_dentry->d_inode,
-                                        old_dentry->d_name.name,
-                                        old_dentry->d_name.len);
+               ret = __btrfs_unlink_inode(trans, root, old_dir,
+                                       old_dentry->d_inode,
+                                       old_dentry->d_name.name,
+                                       old_dentry->d_name.len);
+               if (!ret)
+                       ret = btrfs_update_inode(trans, root, old_inode);
        }
        BUG_ON(ret);
 
@@ -7045,7 +7062,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
        }
 out_fail:
        btrfs_end_transaction_throttle(trans, root);
-
+out_notrans:
        if (old_inode->i_ino == BTRFS_FIRST_FREE_OBJECTID)
                up_read(&root->fs_info->subvol_sem);