jbd: change journal_invalidatepage() to accept length

->invalidatepage() aop now accepts range to invalidate so we can make
use of it in journal_invalidatepage() and all the users in ext3 file
system. Also update ext3 trace point to print out length argument.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>

1 files changed, 7 insertions, 5 deletions

diff --git a/include/trace/events/ext3.h b/include/trace/events/ext3.h
index 15d11a39be47..6797b9de90ed 100644
--- a/include/trace/events/ext3.h
+++ b/include/trace/events/ext3.h
@@ -290,13 +290,14 @@ DEFINE_EVENT(ext3__page_op, ext3_releasepage,
 );
 
 TRACE_EVENT(ext3_invalidatepage,
-        TP_PROTO(struct page *page, unsigned long offset),
+        TP_PROTO(struct page *page, unsigned int offset, unsigned int length),
 
-        TP_ARGS(page, offset),
+        TP_ARGS(page, offset, length),
 
         TP_STRUCT__entry(
                 __field(        pgoff_t, index                  )
-                __field(        unsigned long, offset           )
+                __field(        unsigned int, offset            )
+                __field(        unsigned int, length            )
                 __field(        ino_t,  ino                     )
                 __field(        dev_t,  dev                     )
 
@@ -305,14 +306,15 @@ TRACE_EVENT(ext3_invalidatepage,
         TP_fast_assign(
                 __entry->index  = page->index;
                 __entry->offset = offset;
+                __entry->length = length;
                 __entry->ino    = page->mapping->host->i_ino;
                 __entry->dev    = page->mapping->host->i_sb->s_dev;
         ),
 
-        TP_printk("dev %d,%d ino %lu page_index %lu offset %lu",
+        TP_printk("dev %d,%d ino %lu page_index %lu offset %u length %u",
                   MAJOR(__entry->dev), MINOR(__entry->dev),
                   (unsigned long) __entry->ino,
-                  __entry->index, __entry->offset)
+                  __entry->index, __entry->offset, __entry->length)
 );
 
 TRACE_EVENT(ext3_discard_blocks,