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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2011-05-05 12:56:51 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2011-05-10 22:21:57 +0900
commitaa405b1f4238401616e7d98620170b424b2dbefc (patch)
treec42986a31c3383490d010ae55a97c37f5095220c /fs/nilfs2/page.c
parent0ef28f9aec4dccfba33cef74412f601c1b48b658 (diff)
downloadlinux-aa405b1f4238401616e7d98620170b424b2dbefc.tar.gz
nilfs2: always set back pointer to host inode in mapping->host
In the current nilfs, page cache for btree nodes and meta data files do not set a valid back pointer to the host inode in mapping->host. This will change it so that every address space in nilfs uses mapping->host to hold its host inode. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/page.c')
-rw-r--r--fs/nilfs2/page.c13
1 files changed, 5 insertions, 8 deletions
diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c
index b3b988c2018..3f18f5c076e 100644
--- a/fs/nilfs2/page.c
+++ b/fs/nilfs2/page.c
@@ -182,7 +182,7 @@ int nilfs_page_buffers_clean(struct page *page)
void nilfs_page_bug(struct page *page)
{
struct address_space *m;
- unsigned long ino = 0;
+ unsigned long ino;
if (unlikely(!page)) {
printk(KERN_CRIT "NILFS_PAGE_BUG(NULL)\n");
@@ -190,11 +190,8 @@ void nilfs_page_bug(struct page *page)
}
m = page->mapping;
- if (m) {
- struct inode *inode = NILFS_AS_I(m);
- if (inode != NULL)
- ino = inode->i_ino;
- }
+ ino = m ? m->host->i_ino : 0;
+
printk(KERN_CRIT "NILFS_PAGE_BUG(%p): cnt=%d index#=%llu flags=0x%lx "
"mapping=%p ino=%lu\n",
page, atomic_read(&page->_count),
@@ -441,10 +438,10 @@ unsigned nilfs_page_count_clean_buffers(struct page *page,
return nc;
}
-void nilfs_mapping_init(struct address_space *mapping,
+void nilfs_mapping_init(struct address_space *mapping, struct inode *inode,
struct backing_dev_info *bdi)
{
- mapping->host = NULL;
+ mapping->host = inode;
mapping->flags = 0;
mapping_set_gfp_mask(mapping, GFP_NOFS);
mapping->assoc_mapping = NULL;