From: Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
Subject: [PATCH 09/24] nilfs2: implement GC subsystem debugging output
This patch adds debugging output by means of nilfs2_debug() method
into modules that are grouped by GC subsystem debugging output
option (CONFIG_NILFS2_DEBUG_GC_SUBSYSTEM).
Signed-off-by: Vyacheslav Dubeyko <slava@xxxxxxxxxxx>
CC: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx>
---
fs/nilfs2/gcinode.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/fs/nilfs2/gcinode.c b/fs/nilfs2/gcinode.c
index 57ceaf3..3f8eb77 100644
--- a/fs/nilfs2/gcinode.c
+++ b/fs/nilfs2/gcinode.c
@@ -76,6 +76,10 @@ int nilfs_gccache_submit_read_data(struct inode *inode, sector_t blkoff,
struct buffer_head *bh;
int err;
+ nilfs2_debug(DBG_GCINODE,
+ "i_ino %lu, blkoff %lu, pbn %lu, vbn %llu, out_bh %p\n",
+ inode->i_ino, blkoff, pbn, vbn, out_bh);
+
bh = nilfs_grab_buffer(inode, inode->i_mapping, blkoff, 0);
if (unlikely(!bh))
return -ENOMEM;
@@ -142,6 +146,10 @@ int nilfs_gccache_submit_read_node(struct inode *inode, sector_t pbn,
{
int ret;
+ nilfs2_debug(DBG_GCINODE,
+ "i_ino %lu, pbn %lu, vbn %llu, out_bh %p\n",
+ inode->i_ino, pbn, vbn, out_bh);
+
ret = nilfs_btnode_submit_block(&NILFS_I(inode)->i_btnode_cache,
vbn ? : pbn, pbn, READ, out_bh, &pbn);
if (ret == -EEXIST) /* internal code (cache hit) */
@@ -169,6 +177,8 @@ int nilfs_init_gcinode(struct inode *inode)
{
struct nilfs_inode_info *ii = NILFS_I(inode);
+ nilfs2_debug(DBG_GCINODE, "i_ino %lu\n", inode->i_ino);
+
inode->i_mode = S_IFREG;
mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
inode->i_mapping->a_ops = &empty_aops;
@@ -190,6 +200,7 @@ void nilfs_remove_all_gcinodes(struct the_nilfs *nilfs)
while (!list_empty(head)) {
ii = list_first_entry(head, struct nilfs_inode_info, i_dirty);
+ nilfs2_debug(DBG_GCINODE, "i_ino %lu\n", ii->vfs_inode.i_ino);
list_del_init(&ii->i_dirty);
truncate_inode_pages(&ii->vfs_inode.i_data, 0);
nilfs_btnode_cache_clear(&ii->i_btnode_cache);
--
1.7.9.5
--
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