Merge branches 'x86-fixes-for-linus', 'perf-fixes-for-linus' and 'sched-fixes-for...

[linux-beck.git] / fs / btrfs / inode.c

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index a47e4faa8c46aacd95d446fb33c5cb18e1ce3f43..8039390bd6a6f7bc1d1026d917dcaeb93aa067e6 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3877,7 +3877,7 @@ again:
        p = &root->inode_tree.rb_node;
        parent = NULL;
 
-       if (hlist_unhashed(&inode->i_hash))
+       if (inode_unhashed(inode))
                return;
 
        spin_lock(&root->inode_lock);
@@ -4501,6 +4501,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
        BTRFS_I(inode)->index_cnt = 2;
        BTRFS_I(inode)->root = root;
        BTRFS_I(inode)->generation = trans->transid;
+       inode->i_generation = BTRFS_I(inode)->generation;
        btrfs_set_inode_space_info(root, inode);
 
        if (mode & S_IFDIR)
@@ -4622,12 +4623,12 @@ int btrfs_add_link(struct btrfs_trans_handle *trans,
 }
 
 static int btrfs_add_nondir(struct btrfs_trans_handle *trans,
-                           struct dentry *dentry, struct inode *inode,
-                           int backref, u64 index)
+                           struct inode *dir, struct dentry *dentry,
+                           struct inode *inode, int backref, u64 index)
 {
-       int err = btrfs_add_link(trans, dentry->d_parent->d_inode,
-                                inode, dentry->d_name.name,
-                                dentry->d_name.len, backref, index);
+       int err = btrfs_add_link(trans, dir, inode,
+                                dentry->d_name.name, dentry->d_name.len,
+                                backref, index);
        if (!err) {
                d_instantiate(dentry, inode);
                return 0;
@@ -4668,8 +4669,7 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry,
        btrfs_set_trans_block_group(trans, dir);
 
        inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
-                               dentry->d_name.len,
-                               dentry->d_parent->d_inode->i_ino, objectid,
+                               dentry->d_name.len, dir->i_ino, objectid,
                                BTRFS_I(dir)->block_group, mode, &index);
        err = PTR_ERR(inode);
        if (IS_ERR(inode))
@@ -4682,7 +4682,7 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry,
        }
 
        btrfs_set_trans_block_group(trans, inode);
-       err = btrfs_add_nondir(trans, dentry, inode, 0, index);
+       err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index);
        if (err)
                drop_inode = 1;
        else {
@@ -4730,10 +4730,8 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
        btrfs_set_trans_block_group(trans, dir);
 
        inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
-                               dentry->d_name.len,
-                               dentry->d_parent->d_inode->i_ino,
-                               objectid, BTRFS_I(dir)->block_group, mode,
-                               &index);
+                               dentry->d_name.len, dir->i_ino, objectid,
+                               BTRFS_I(dir)->block_group, mode, &index);
        err = PTR_ERR(inode);
        if (IS_ERR(inode))
                goto out_unlock;
@@ -4745,7 +4743,7 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
        }
 
        btrfs_set_trans_block_group(trans, inode);
-       err = btrfs_add_nondir(trans, dentry, inode, 0, index);
+       err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index);
        if (err)
                drop_inode = 1;
        else {
@@ -4787,6 +4785,7 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
                return -EPERM;
 
        btrfs_inc_nlink(inode);
+       inode->i_ctime = CURRENT_TIME;
 
        err = btrfs_set_inode_index(dir, &index);
        if (err)
@@ -4803,17 +4802,19 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
        }
 
        btrfs_set_trans_block_group(trans, dir);
-       atomic_inc(&inode->i_count);
+       ihold(inode);
 
-       err = btrfs_add_nondir(trans, dentry, inode, 1, index);
+       err = btrfs_add_nondir(trans, dir, dentry, inode, 1, index);
 
        if (err) {
                drop_inode = 1;
        } else {
+               struct dentry *parent = dget_parent(dentry);
                btrfs_update_inode_block_group(trans, dir);
                err = btrfs_update_inode(trans, root, inode);
                BUG_ON(err);
-               btrfs_log_new_name(trans, inode, NULL, dentry->d_parent);
+               btrfs_log_new_name(trans, inode, NULL, parent);
+               dput(parent);
        }
 
        nr = trans->blocks_used;
@@ -4853,8 +4854,7 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
        btrfs_set_trans_block_group(trans, dir);
 
        inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
-                               dentry->d_name.len,
-                               dentry->d_parent->d_inode->i_ino, objectid,
+                               dentry->d_name.len, dir->i_ino, objectid,
                                BTRFS_I(dir)->block_group, S_IFDIR | mode,
                                &index);
        if (IS_ERR(inode)) {
@@ -4877,9 +4877,8 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
        if (err)
                goto out_fail;
 
-       err = btrfs_add_link(trans, dentry->d_parent->d_inode,
-                                inode, dentry->d_name.name,
-                                dentry->d_name.len, 0, index);
+       err = btrfs_add_link(trans, dir, inode, dentry->d_name.name,
+                            dentry->d_name.len, 0, index);
        if (err)
                goto out_fail;
 
@@ -5603,15 +5602,18 @@ static void btrfs_endio_direct_write(struct bio *bio, int err)
        struct btrfs_trans_handle *trans;
        struct btrfs_ordered_extent *ordered = NULL;
        struct extent_state *cached_state = NULL;
+       u64 ordered_offset = dip->logical_offset;
+       u64 ordered_bytes = dip->bytes;
        int ret;
 
        if (err)
                goto out_done;
-
-       ret = btrfs_dec_test_ordered_pending(inode, &ordered,
-                                            dip->logical_offset, dip->bytes);
+again:
+       ret = btrfs_dec_test_first_ordered_pending(inode, &ordered,
+                                                  &ordered_offset,
+                                                  ordered_bytes);
        if (!ret)
-               goto out_done;
+               goto out_test;
 
        BUG_ON(!ordered);
 
@@ -5671,8 +5673,20 @@ out_unlock:
 out:
        btrfs_delalloc_release_metadata(inode, ordered->len);
        btrfs_end_transaction(trans, root);
+       ordered_offset = ordered->file_offset + ordered->len;
        btrfs_put_ordered_extent(ordered);
        btrfs_put_ordered_extent(ordered);
+
+out_test:
+       /*
+        * our bio might span multiple ordered extents.  If we haven't
+        * completed the accounting for the whole dio, go back and try again
+        */
+       if (ordered_offset < dip->logical_offset + dip->bytes) {
+               ordered_bytes = dip->logical_offset + dip->bytes -
+                       ordered_offset;
+               goto again;
+       }
 out_done:
        bio->bi_private = dip->private;
 
@@ -6767,8 +6781,9 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
        BUG_ON(ret);
 
        if (old_inode->i_ino != BTRFS_FIRST_FREE_OBJECTID) {
-               btrfs_log_new_name(trans, old_inode, old_dir,
-                                  new_dentry->d_parent);
+               struct dentry *parent = dget_parent(new_dentry);
+               btrfs_log_new_name(trans, old_inode, old_dir, parent);
+               dput(parent);
                btrfs_end_log_trans(root);
        }
 out_fail:
@@ -6918,8 +6933,7 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
        btrfs_set_trans_block_group(trans, dir);
 
        inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
-                               dentry->d_name.len,
-                               dentry->d_parent->d_inode->i_ino, objectid,
+                               dentry->d_name.len, dir->i_ino, objectid,
                                BTRFS_I(dir)->block_group, S_IFLNK|S_IRWXUGO,
                                &index);
        err = PTR_ERR(inode);
@@ -6933,7 +6947,7 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
        }
 
        btrfs_set_trans_block_group(trans, inode);
-       err = btrfs_add_nondir(trans, dentry, inode, 0, index);
+       err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index);
        if (err)
                drop_inode = 1;
        else {
@@ -7004,6 +7018,7 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode,
        struct btrfs_root *root = BTRFS_I(inode)->root;
        struct btrfs_key ins;
        u64 cur_offset = start;
+       u64 i_size;
        int ret = 0;
        bool own_trans = true;
 
@@ -7045,11 +7060,11 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode,
                    (actual_len > inode->i_size) &&
                    (cur_offset > inode->i_size)) {
                        if (cur_offset > actual_len)
-                               i_size_write(inode, actual_len);
+                               i_size = actual_len;
                        else
-                               i_size_write(inode, cur_offset);
-                       i_size_write(inode, cur_offset);
-                       btrfs_ordered_update_i_size(inode, cur_offset, NULL);
+                               i_size = cur_offset;
+                       i_size_write(inode, i_size);
+                       btrfs_ordered_update_i_size(inode, i_size, NULL);
                }
 
                ret = btrfs_update_inode(trans, root, inode);
@@ -7103,6 +7118,10 @@ static long btrfs_fallocate(struct inode *inode, int mode,
        btrfs_wait_ordered_range(inode, alloc_start, alloc_end - alloc_start);
 
        mutex_lock(&inode->i_mutex);
+       ret = inode_newsize_ok(inode, alloc_end);
+       if (ret)
+               goto out;
+
        if (alloc_start > inode->i_size) {
                ret = btrfs_cont_expand(inode, alloc_start);
                if (ret)
@@ -7299,6 +7318,7 @@ static const struct inode_operations btrfs_symlink_inode_operations = {
        .readlink       = generic_readlink,
        .follow_link    = page_follow_link_light,
        .put_link       = page_put_link,
+       .getattr        = btrfs_getattr,
        .permission     = btrfs_permission,
        .setxattr       = btrfs_setxattr,
        .getxattr       = btrfs_getxattr,