[PATCH v1 v1 7/7] ntfs3: add file I/O tracepoints
From: Baolin Liu <hidden>
Date: 2026-07-17 03:23:47
Also in:
lkml, ntfs3
Subsystem:
filesystems (vfs and infrastructure), ntfs3 filesystem, the rest, tracing · Maintainers:
Alexander Viro, Christian Brauner, Konstantin Komarov, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
From: Baolin Liu <redacted> Add ntfs3 tracepoints for file I/O operations. This adds trace events for ntfs_file_read_iter() and ntfs_file_write_iter() to help observe file read and write activity. Signed-off-by: Baolin Liu <redacted> --- fs/ntfs3/file.c | 5 +++++ include/trace/events/ntfs3.h | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+)
diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
index d601f088618c..a260a57ebd65 100644
--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c@@ -20,6 +20,7 @@ #include "debug.h" #include "ntfs.h" #include "ntfs_fs.h" +#include <trace/events/ntfs3.h> /* * cifx, btrfs, exfat, ext4, f2fs use this constant.
@@ -822,6 +823,8 @@ static ssize_t ntfs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter) unsigned int dio_flags; ssize_t err; + trace_ntfs3_file_read_iter(iocb, iter); + err = check_read_restriction(inode); if (err) return err;
@@ -1225,6 +1228,8 @@ static ssize_t ntfs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) loff_t vbo, endbyte; ssize_t ret, err; + trace_ntfs3_file_write_iter(iocb, from); + if (!inode_trylock(inode)) { if (iocb->ki_flags & IOCB_NOWAIT) return -EAGAIN;
diff --git a/include/trace/events/ntfs3.h b/include/trace/events/ntfs3.h
index a846aa61153c..595314c09e43 100644
--- a/include/trace/events/ntfs3.h
+++ b/include/trace/events/ntfs3.h@@ -357,6 +357,39 @@ TRACE_EVENT(ntfs3_iomap_end, __entry->written, __entry->flags) ); +DECLARE_EVENT_CLASS(ntfs3_file_class, + TP_PROTO(struct kiocb *iocb, struct iov_iter *iter), + TP_ARGS(iocb, iter), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(unsigned long, ino) + __field(loff_t, size) + __field(loff_t, offset) + __field(size_t, count) + ), + TP_fast_assign( + __entry->dev = file_inode(iocb->ki_filp)->i_sb->s_dev; + __entry->ino = file_inode(iocb->ki_filp)->i_ino; + __entry->size = i_size_read(file_inode(iocb->ki_filp)); + __entry->offset = iocb->ki_pos; + __entry->count = iov_iter_count(iter); + ), + TP_printk("dev=(%d,%d) ino=%lu size=%lld pos=%lld bytecount=%zu", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, __entry->size, __entry->offset, + __entry->count) +); + +DEFINE_EVENT(ntfs3_file_class, ntfs3_file_read_iter, + TP_PROTO(struct kiocb *iocb, struct iov_iter *iter), + TP_ARGS(iocb, iter) +); + +DEFINE_EVENT(ntfs3_file_class, ntfs3_file_write_iter, + TP_PROTO(struct kiocb *iocb, struct iov_iter *iter), + TP_ARGS(iocb, iter) +); + #endif /* _TRACE_NTFS3_H */ #include <trace/define_trace.h>
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2.51.0