static int nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) { int ret; struct inode *inode = file_inode(file); trace_nfs_fsync_enter(inode); nfs_inode_dio_wait(inode); do { ret = filemap_write_and_wait_range(inode->i_mapping, start, end); if (ret != 0) break; mutex_lock(&inode->i_mutex); ret = nfs_file_fsync_commit(file, start, end, datasync); mutex_unlock(&inode->i_mutex); /* * If nfs_file_fsync_commit detected a server reboot, then * resend all dirty pages that might have been covered by * the NFS_CONTEXT_RESEND_WRITES flag */ start = 0; end = LLONG_MAX; } while (ret == -EAGAIN); trace_nfs_fsync_exit(inode, ret); return ret; }
static int nfs4_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) { int ret; struct inode *inode = file_inode(file); do { ret = filemap_write_and_wait_range(inode->i_mapping, start, end); if (ret != 0) break; mutex_lock(&inode->i_mutex); ret = nfs_file_fsync_commit(file, start, end, datasync); if (!ret && !datasync) /* application has asked for meta-data sync */ ret = pnfs_layoutcommit_inode(inode, true); mutex_unlock(&inode->i_mutex); /* * If nfs_file_fsync_commit detected a server reboot, then * resend all dirty pages that might have been covered by * the NFS_CONTEXT_RESEND_WRITES flag */ start = 0; end = LLONG_MAX; } while (ret == -EAGAIN); return ret; }
static int nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) { int ret; struct inode *inode = file->f_path.dentry->d_inode; ret = filemap_write_and_wait_range(inode->i_mapping, start, end); if (ret != 0) goto out; mutex_lock(&inode->i_mutex); ret = nfs_file_fsync_commit(file, start, end, datasync); mutex_unlock(&inode->i_mutex); out: return ret; }