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path: root/fs/btrfs/file.c
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Diffstat (limited to 'fs/btrfs/file.c')
-rw-r--r--fs/btrfs/file.c24
1 files changed, 17 insertions, 7 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 3e8023efaff7..dc78954861b3 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1091,19 +1091,24 @@ static ssize_t btrfs_file_write(struct file *file, const char __user *buf,
WARN_ON(num_pages > nrptrs);
memset(pages, 0, sizeof(struct page *) * nrptrs);
- ret = btrfs_check_free_space(root, write_bytes, 0);
+ ret = btrfs_check_data_free_space(root, inode, write_bytes);
if (ret)
goto out;
ret = prepare_pages(root, file, pages, num_pages,
pos, first_index, last_index,
write_bytes);
- if (ret)
+ if (ret) {
+ btrfs_free_reserved_data_space(root, inode,
+ write_bytes);
goto out;
+ }
ret = btrfs_copy_from_user(pos, num_pages,
write_bytes, pages, buf);
if (ret) {
+ btrfs_free_reserved_data_space(root, inode,
+ write_bytes);
btrfs_drop_pages(pages, num_pages);
goto out;
}
@@ -1111,8 +1116,11 @@ static ssize_t btrfs_file_write(struct file *file, const char __user *buf,
ret = dirty_and_release_pages(NULL, root, file, pages,
num_pages, pos, write_bytes);
btrfs_drop_pages(pages, num_pages);
- if (ret)
+ if (ret) {
+ btrfs_free_reserved_data_space(root, inode,
+ write_bytes);
goto out;
+ }
if (will_write) {
btrfs_fdatawrite_range(inode->i_mapping, pos,
@@ -1136,6 +1144,8 @@ static ssize_t btrfs_file_write(struct file *file, const char __user *buf,
}
out:
mutex_unlock(&inode->i_mutex);
+ if (ret)
+ err = ret;
out_nolock:
kfree(pages);
@@ -1222,7 +1232,7 @@ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync)
/*
* ok we haven't committed the transaction yet, lets do a commit
*/
- if (file->private_data)
+ if (file && file->private_data)
btrfs_ioctl_trans_end(file);
trans = btrfs_start_transaction(root, 1);
@@ -1231,7 +1241,7 @@ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync)
goto out;
}
- ret = btrfs_log_dentry_safe(trans, root, file->f_dentry);
+ ret = btrfs_log_dentry_safe(trans, root, dentry);
if (ret < 0)
goto out;
@@ -1245,7 +1255,7 @@ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync)
* file again, but that will end up using the synchronization
* inside btrfs_sync_log to keep things safe.
*/
- mutex_unlock(&file->f_dentry->d_inode->i_mutex);
+ mutex_unlock(&dentry->d_inode->i_mutex);
if (ret > 0) {
ret = btrfs_commit_transaction(trans, root);
@@ -1253,7 +1263,7 @@ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync)
btrfs_sync_log(trans, root);
ret = btrfs_end_transaction(trans, root);
}
- mutex_lock(&file->f_dentry->d_inode->i_mutex);
+ mutex_lock(&dentry->d_inode->i_mutex);
out:
return ret > 0 ? EIO : ret;
}