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nilfs2: always set back pointer to host inode in mapping->host

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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>
This commit is contained in:
Ryusuke Konishi
2011-05-05 12:56:51 +09:00
parent 0ef28f9aec
commit aa405b1f42
8 changed files with 14 additions and 36 deletions
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16
fs/nilfs2/segment.c
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@@ -655,13 +655,10 @@ static size_t nilfs_lookup_dirty_data_buffers(struct inode *inode,
if (unlikely(page->index > last))
break;
if (mapping->host) {
lock_page(page);
if (!page_has_buffers(page))
create_empty_buffers(page,
1 << inode->i_blkbits, 0);
unlock_page(page);
}
lock_page(page);
if (!page_has_buffers(page))
create_empty_buffers(page, 1 << inode->i_blkbits, 0);
unlock_page(page);
bh = head = page_buffers(page);
do {
@@ -1503,10 +1500,7 @@ nilfs_segctor_update_payload_blocknr(struct nilfs_sc_info *sci,
nblocks = le32_to_cpu(finfo->fi_nblocks);
ndatablk = le32_to_cpu(finfo->fi_ndatablk);
if (buffer_nilfs_node(bh))
inode = NILFS_BTNC_I(bh->b_page->mapping);
else
inode = NILFS_AS_I(bh->b_page->mapping);
inode = bh->b_page->mapping->host;
if (mode == SC_LSEG_DSYNC)
sc_op = &nilfs_sc_dsync_ops;