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authorNamjae Jeon <namjae.jeon@samsung.com>2013-04-20 01:28:52 +0900
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2013-04-23 16:40:38 +0900
commit51dd62493477923723c797c6da60121ed39900ed (patch)
tree7589f4396dc6caf0c043831d6677989babcfa7cf /fs/f2fs
parenta2a4a7e4abb27c833d4e09ac1d434ab48a64062c (diff)
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>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/file.c9
-rw-r--r--fs/f2fs/node.c20
2 files changed, 27 insertions, 2 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 0b0ba26ba76..71efa373cc4 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -193,6 +193,9 @@ static int truncate_data_blocks_range(struct dnode_of_data *dn, int count)
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 @@ static int truncate_blocks(struct inode *inode, u64 from)
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 @@ static int truncate_blocks(struct inode *inode, u64 from)
if (err == -ENOENT)
goto free_next;
mutex_unlock_op(sbi, ilock);
+ trace_f2fs_truncate_blocks_exit(inode, err);
return err;
}
@@ -263,6 +269,7 @@ free_next:
/* 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 @@ void f2fs_truncate(struct inode *inode)
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);
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 5a7edf90ca4..5a825502b0b 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -19,6 +19,7 @@
#include "f2fs.h"
#include "node.h"
#include "segment.h"
+#include <trace/events/f2fs.h>
static struct kmem_cache *nat_entry_slab;
static struct kmem_cache *free_nid_slab;
@@ -508,6 +509,7 @@ invalidate:
f2fs_put_page(dn->node_page, 1);
dn->node_page = NULL;
+ trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr);
}
static int truncate_dnode(struct dnode_of_data *dn)
@@ -548,9 +550,13 @@ static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs,
if (dn->nid == 0)
return NIDS_PER_BLOCK + 1;
+ trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr);
+
page = get_node_page(sbi, dn->nid);
- if (IS_ERR(page))
+ if (IS_ERR(page)) {
+ trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page));
return PTR_ERR(page);
+ }
rn = (struct f2fs_node *)page_address(page);
if (depth < 3) {
@@ -592,10 +598,12 @@ static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs,
} else {
f2fs_put_page(page, 1);
}
+ trace_f2fs_truncate_nodes_exit(dn->inode, freed);
return freed;
out_err:
f2fs_put_page(page, 1);
+ trace_f2fs_truncate_nodes_exit(dn->inode, ret);
return ret;
}
@@ -650,6 +658,9 @@ static int truncate_partial_nodes(struct dnode_of_data *dn,
fail:
for (i = depth - 3; i >= 0; i--)
f2fs_put_page(pages[i], 1);
+
+ trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err);
+
return err;
}
@@ -666,11 +677,15 @@ int truncate_inode_blocks(struct inode *inode, pgoff_t from)
struct dnode_of_data dn;
struct page *page;
+ trace_f2fs_truncate_inode_blocks_enter(inode, from);
+
level = get_node_path(from, offset, noffset);
page = get_node_page(sbi, inode->i_ino);
- if (IS_ERR(page))
+ if (IS_ERR(page)) {
+ trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page));
return PTR_ERR(page);
+ }
set_new_dnode(&dn, inode, page, NULL, 0);
unlock_page(page);
@@ -740,6 +755,7 @@ skip_partial:
}
fail:
f2fs_put_page(page, 0);
+ trace_f2fs_truncate_inode_blocks_exit(inode, err);
return err > 0 ? 0 : err;
}