From: Michael Jeanson <mjeanson@efficios.com>
Date: Tue, 11 Feb 2020 19:47:23 +0000 (-0500)
Subject: fix: btrfs: make btrfs_ordered_extent naming consistent (v5.6)
X-Git-Tag: before-upstreaming~42
X-Git-Url: http://git.liburcu.org/?p=lttng-modules.git;a=commitdiff_plain;h=f7afb954f3908b302f7b3fef1b8195736845c41f

fix: btrfs: make btrfs_ordered_extent naming consistent (v5.6)

See upstream commit :

  commit bffe633e00fb6b904817137fc17a44b42efcd985
  Author: Omar Sandoval <osandov@fb.com>
  Date:   Mon Dec 2 17:34:19 2019 -0800

    btrfs: make btrfs_ordered_extent naming consistent with btrfs_file_extent_item

    ordered->start, ordered->len, and ordered->disk_len correspond to
    fi->disk_bytenr, fi->num_bytes, and fi->disk_num_bytes, respectively.
    It's confusing to translate between the two naming schemes. Since a
    btrfs_ordered_extent is basically a pending btrfs_file_extent_item,
    let's make the former use the naming from the latter.

    Note that I didn't touch the names in tracepoints just in case there are
    scripts depending on the current naming.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/instrumentation/events/lttng-module/btrfs.h b/instrumentation/events/lttng-module/btrfs.h
index b4f2fe70..7b290085 100644
--- a/instrumentation/events/lttng-module/btrfs.h
+++ b/instrumentation/events/lttng-module/btrfs.h
@@ -346,7 +346,29 @@ LTTNG_TRACEPOINT_EVENT(btrfs_handle_em_exist,
 )
 #endif
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0))
+LTTNG_TRACEPOINT_EVENT_CLASS(btrfs__ordered_extent,
+
+	TP_PROTO(const struct inode *inode,
+		 const struct btrfs_ordered_extent *ordered),
+
+	TP_ARGS(inode, ordered),
+
+	TP_FIELDS(
+		ctf_integer(ino_t, ino, inode->i_ino)
+		ctf_integer(u64, file_offset, ordered->file_offset)
+		ctf_integer(u64, start, ordered->disk_bytenr)
+		ctf_integer(u64, len, ordered->num_bytes)
+		ctf_integer(u64, disk_len, ordered->disk_num_bytes)
+		ctf_integer(u64, bytes_left, ordered->bytes_left)
+		ctf_integer(unsigned long, flags, ordered->flags)
+		ctf_integer(int, compress_type, ordered->compress_type)
+		ctf_integer(int, refs, refcount_read(&ordered->refs))
+		ctf_integer(u64, root_objectid,
+				BTRFS_I(inode)->root->root_key.objectid)
+	)
+)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
 LTTNG_TRACEPOINT_EVENT_CLASS(btrfs__ordered_extent,
 
 	TP_PROTO(const struct inode *inode,