[PATCH 5/9] f2fs: fix the f2fs_file_write_iter tracepoint
From: Eric Biggers <ebiggers@kernel.org>
Date: 2021-07-16 14:40:48
Also in:
linux-f2fs-devel, linux-xfs
Subsystem:
f2fs file system, filesystems (vfs and infrastructure), the rest, tracing · Maintainers:
Jaegeuk Kim, Chao Yu, Alexander Viro, Christian Brauner, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
From: Eric Biggers <redacted> Pass in the original position and count rather than the position and count that were updated by the write. Also use the correct types for all arguments, in particular the file offset which was being truncated to 32 bits on 32-bit platforms. Signed-off-by: Eric Biggers <redacted> --- fs/f2fs/file.c | 5 +++-- include/trace/events/f2fs.h | 12 ++++++------ 2 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 878b2460f79b..279252c7f7bc 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c@@ -4282,6 +4282,8 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) { struct file *file = iocb->ki_filp; struct inode *inode = file_inode(file); + const loff_t orig_pos = iocb->ki_pos; + const size_t orig_count = iov_iter_count(from); loff_t target_size; int preallocated; ssize_t ret;
@@ -4363,8 +4365,7 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) out_unlock: inode_unlock(inode); out: - trace_f2fs_file_write_iter(inode, iocb->ki_pos, - iov_iter_count(from), ret); + trace_f2fs_file_write_iter(inode, orig_pos, orig_count, ret); if (ret > 0) ret = generic_write_sync(iocb, ret); return ret;
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 56b113e3cd6a..bffb38622e9b 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h@@ -540,17 +540,17 @@ TRACE_EVENT(f2fs_truncate_partial_nodes, TRACE_EVENT(f2fs_file_write_iter, - TP_PROTO(struct inode *inode, unsigned long offset, - unsigned long length, int ret), + TP_PROTO(struct inode *inode, loff_t offset, size_t length, + ssize_t 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) + __field(loff_t, offset) + __field(size_t, length) + __field(ssize_t, ret) ), TP_fast_assign(
@@ -562,7 +562,7 @@ TRACE_EVENT(f2fs_file_write_iter, ), TP_printk("dev = (%d,%d), ino = %lu, " - "offset = %lu, length = %lu, written(err) = %d", + "offset = %lld, length = %zu, written(err) = %zd", show_dev_ino(__entry), __entry->offset, __entry->length,
--
2.32.0