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tracing: Update *ppos instead of filp->f_pos 

Instead of directly updating filp->f_pos we should update the *ppos
argument. The filp->f_pos gets updated within the file_pos_write()
function called from sys_write().

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20091023233646.399670810@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jiri Olsa 2009-10-23 19:36:16 -04:00 committed by Ingo Molnar
parent 964fe080d9
commit cf8517cf90
2 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/trace/ftrace.c
View File

@ -740,7 +740,7 @@ ftrace_profile_write(struct file *filp, const char __user *ubuf,
out:
mutex_unlock(&ftrace_profile_lock);
filp->f_pos += cnt;
*ppos += cnt;
return cnt;
}

8
kernel/trace/trace.c
View File

@ -2440,7 +2440,7 @@ tracing_trace_options_write(struct file *filp, const char __user *ubuf,
return ret;
}
filp->f_pos += cnt;
*ppos += cnt;
return cnt;
}
@ -2582,7 +2582,7 @@ tracing_ctrl_write(struct file *filp, const char __user *ubuf,
}
mutex_unlock(&trace_types_lock);
filp->f_pos += cnt;
*ppos += cnt;
return cnt;
}
@ -2764,7 +2764,7 @@ tracing_set_trace_write(struct file *filp, const char __user *ubuf,
if (err)
return err;
filp->f_pos += ret;
*ppos += ret;
return ret;
}
@ -3299,7 +3299,7 @@ tracing_entries_write(struct file *filp, const char __user *ubuf,
}
}
filp->f_pos += cnt;
*ppos += cnt;
/* If check pages failed, return ENOMEM */
if (tracing_disabled)