f2fs: add tracepoints for truncate operation
add tracepoints for tracing the truncate operations
like truncate node/data blocks, f2fs_truncate etc.
Tracepoints are added at entry and exit of operation
to trace the success & failure of operation.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
[Jaegeuk: combine and modify the tracepoint structures]
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 0b0ba26..71efa37 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -193,6 +193,9 @@
sync_inode_page(dn);
}
dn->ofs_in_node = ofs;
+
+ trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
+ dn->ofs_in_node, nr_free);
return nr_free;
}
@@ -229,6 +232,8 @@
int count = 0, ilock = -1;
int err;
+ trace_f2fs_truncate_blocks_enter(inode, from);
+
free_from = (pgoff_t)
((from + blocksize - 1) >> (sbi->log_blocksize));
@@ -239,6 +244,7 @@
if (err == -ENOENT)
goto free_next;
mutex_unlock_op(sbi, ilock);
+ trace_f2fs_truncate_blocks_exit(inode, err);
return err;
}
@@ -263,6 +269,7 @@
/* lastly zero out the first data page */
truncate_partial_data_page(inode, from);
+ trace_f2fs_truncate_blocks_exit(inode, err);
return err;
}
@@ -272,6 +279,8 @@
S_ISLNK(inode->i_mode)))
return;
+ trace_f2fs_truncate(inode);
+
if (!truncate_blocks(inode, i_size_read(inode))) {
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(inode);