This is a note to let you know that I've just added the patch titled
f2fs: fix the f2fs_file_write_iter tracepoint
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
f2fs-fix-the-f2fs_file_write_iter-tracepoint.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7d2b90db2cc3a3785e631d7cc38dca8a04ec89e9
Author: Eric Biggers <ebiggers@xxxxxxxxxx>
Date: Fri Jul 16 09:39:15 2021 -0500
f2fs: fix the f2fs_file_write_iter tracepoint
[ Upstream commit ccf7cf92373d1a53166582013430b3b9c05a6ba2 ]
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 <ebiggers@xxxxxxxxxx>
Reviewed-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Stable-dep-of: bb34cc6ca87f ("f2fs: fix to update iostat correctly in f2fs_filemap_fault()")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 533ab259ce01..d220c4523982 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -4255,6 +4255,8 @@ 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);
ssize_t ret;
if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
@@ -4358,8 +4360,7 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
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 f5dcf7c9b707..6033eaddcb74 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,
