f2fs: add tracepoint for f2fs_file_write_iter() (126ce721) · Commits · 戴 / test

fs/f2fs/file.c

+19 −9

Original line number	Diff line number	Diff line
		@@ -3035,15 +3035,21 @@ static ssize_t f2fs_file_write_iter(struct kiocb iocb, struct iov_iter from)
		struct inode *inode = file_inode(file);
		ssize_t ret;

		if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
		return -EIO;
		if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
		ret = -EIO;
		goto out;
		}

		if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT))
		return -EINVAL;
		if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT)) {
		ret = -EINVAL;
		goto out;
		}

		if (!inode_trylock(inode)) {
		if (iocb->ki_flags & IOCB_NOWAIT)
		return -EAGAIN;
		if (iocb->ki_flags & IOCB_NOWAIT) {
		ret = -EAGAIN;
		goto out;
		}
		inode_lock(inode);
		}

		@@ -3066,7 +3072,8 @@ static ssize_t f2fs_file_write_iter(struct kiocb iocb, struct iov_iter from)
		clear_inode_flag(inode,
		FI_NO_PREALLOC);
		inode_unlock(inode);
		return -EAGAIN;
		ret = -EAGAIN;
		goto out;
		}

		} else {
		@@ -3077,7 +3084,8 @@ static ssize_t f2fs_file_write_iter(struct kiocb iocb, struct iov_iter from)
		if (err) {
		clear_inode_flag(inode, FI_NO_PREALLOC);
		inode_unlock(inode);
		return err;
		ret = err;
		goto out;
		}
		}
		ret = __generic_file_write_iter(iocb, from);
		@@ -3091,7 +3099,9 @@ static ssize_t f2fs_file_write_iter(struct kiocb iocb, struct iov_iter from)
		f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
		}
		inode_unlock(inode);

		out:
		trace_f2fs_file_write_iter(inode, iocb->ki_pos,
		iov_iter_count(from), ret);
		if (ret > 0)
		ret = generic_write_sync(iocb, ret);
		return ret;

+31 −0

Original line number	Diff line number	Diff line
		@@ -533,6 +533,37 @@ TRACE_EVENT(f2fs_truncate_partial_nodes,
		__entry->err)
		);

		TRACE_EVENT(f2fs_file_write_iter,

		TP_PROTO(struct inode *inode, unsigned long offset,
		unsigned long length, int ret),

		TP_ARGS(inode, offset, length, ret),

		TP_STRUCT__entry(
		__field(dev_t, dev)
		__field(ino_t, ino)
		__field(unsigned long, offset)
		__field(unsigned long, length)
		__field(int, ret)
		),

		TP_fast_assign(
		__entry->dev = inode->i_sb->s_dev;
		__entry->ino = inode->i_ino;
		__entry->offset = offset;
		__entry->length = length;
		__entry->ret = ret;
		),

		TP_printk("dev = (%d,%d), ino = %lu, "
		"offset = %lu, length = %lu, written(err) = %d",
		show_dev_ino(__entry),
		__entry->offset,
		__entry->length,
		__entry->ret)
		);

		TRACE_EVENT(f2fs_map_blocks,
		TP_PROTO(struct inode inode, struct f2fs_map_blocks map, int ret),