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authorSteven Whitehouse <swhiteho@redhat.com>2009-06-12 08:49:20 +0100
committerSteven Whitehouse <swhiteho@redhat.com>2009-06-12 08:49:20 +0100
commit63997775b795f97ef51f3e56bc3abc9edc04bbb0 (patch)
tree607519910f92b1101fbe0223c301c503001bc0ef /fs/gfs2/bmap.c
parent8ebf975608aaebd7feb33d77f07ba21a6380e086 (diff)
GFS2: Add tracepoints
This patch adds the ability to trace various aspects of the GFS2 filesystem. The trace points are divided into three groups, glocks, logging and bmap. These points have been chosen because they allow inspection of the major internal functions of GFS2 and they are also generic enough that they are unlikely to need any major changes as the filesystem evolves. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/bmap.c')
-rw-r--r--fs/gfs2/bmap.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 329763530dc..6d47379e794 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -25,6 +25,7 @@
#include "trans.h"
#include "dir.h"
#include "util.h"
+#include "trace_gfs2.h"
/* This doesn't need to be that large as max 64 bit pointers in a 4k
* block is 512, so __u16 is fine for that. It saves stack space to
@@ -589,6 +590,7 @@ int gfs2_block_map(struct inode *inode, sector_t lblock,
clear_buffer_mapped(bh_map);
clear_buffer_new(bh_map);
clear_buffer_boundary(bh_map);
+ trace_gfs2_bmap(ip, bh_map, lblock, create, 1);
if (gfs2_is_dir(ip)) {
bsize = sdp->sd_jbsize;
arr = sdp->sd_jheightsize;
@@ -623,6 +625,7 @@ int gfs2_block_map(struct inode *inode, sector_t lblock,
ret = 0;
out:
release_metapath(&mp);
+ trace_gfs2_bmap(ip, bh_map, lblock, create, ret);
bmap_unlock(ip, create);
return ret;