xfs: add size update tracepoint to IO completion
For improving insight into IO completion behaviour.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index 3447733..26384fe 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -181,6 +181,7 @@
isize = xfs_ioend_new_eof(ioend);
if (isize) {
+ trace_xfs_setfilesize(ip, ioend->io_offset, ioend->io_size);
ip->i_d.di_size = isize;
xfs_mark_inode_dirty(ip);
}
diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h
index 3bdfcb9..fda0708 100644
--- a/fs/xfs/linux-2.6/xfs_trace.h
+++ b/fs/xfs/linux-2.6/xfs_trace.h
@@ -998,7 +998,8 @@
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_ino_t, ino)
- __field(loff_t, size)
+ __field(loff_t, isize)
+ __field(loff_t, disize)
__field(loff_t, new_size)
__field(loff_t, offset)
__field(size_t, count)
@@ -1006,16 +1007,18 @@
TP_fast_assign(
__entry->dev = VFS_I(ip)->i_sb->s_dev;
__entry->ino = ip->i_ino;
- __entry->size = ip->i_d.di_size;
+ __entry->isize = ip->i_size;
+ __entry->disize = ip->i_d.di_size;
__entry->new_size = ip->i_new_size;
__entry->offset = offset;
__entry->count = count;
),
- TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx "
+ TP_printk("dev %d:%d ino 0x%llx isize 0x%llx disize 0x%llx new_size 0x%llx "
"offset 0x%llx count %zd",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->ino,
- __entry->size,
+ __entry->isize,
+ __entry->disize,
__entry->new_size,
__entry->offset,
__entry->count)
@@ -1028,6 +1031,7 @@
DEFINE_SIMPLE_IO_EVENT(xfs_delalloc_enospc);
DEFINE_SIMPLE_IO_EVENT(xfs_unwritten_convert);
DEFINE_SIMPLE_IO_EVENT(xfs_get_blocks_notfound);
+DEFINE_SIMPLE_IO_EVENT(xfs_setfilesize);
DECLARE_EVENT_CLASS(xfs_itrunc_class,
TP_PROTO(struct xfs_inode *ip, xfs_fsize_t new_size),