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hfsplus: clean up hfsplus_write_inode

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Add a new hfsplus_system_write_inode for writing the special system inodes
and streamline the fastpath write_inode code.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
This commit is contained in:
Christoph Hellwig 2010-10-01 05:43:43 +02:00 committed by Christoph Hellwig
parent fc4fff8210
commit b5080f77ed
1 changed files with 45 additions and 51 deletions
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96
fs/hfsplus/super.c
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@ -89,63 +89,57 @@ struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino)
return inode;
}
static int hfsplus_system_write_inode(struct inode *inode)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
struct hfsplus_vh *vhdr = sbi->s_vhdr;
struct hfsplus_fork_raw *fork;
struct hfs_btree *tree = NULL;
switch (inode->i_ino) {
case HFSPLUS_EXT_CNID:
fork = &vhdr->ext_file;
tree = sbi->ext_tree;
break;
case HFSPLUS_CAT_CNID:
fork = &vhdr->cat_file;
tree = sbi->cat_tree;
break;
case HFSPLUS_ALLOC_CNID:
fork = &vhdr->alloc_file;
break;
case HFSPLUS_START_CNID:
fork = &vhdr->start_file;
break;
case HFSPLUS_ATTR_CNID:
fork = &vhdr->attr_file;
tree = sbi->attr_tree;
default:
return -EIO;
}
if (fork->total_size != cpu_to_be64(inode->i_size)) {
sbi->flags |= HFSPLUS_SB_WRITEBACKUP;
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, fork);
if (tree)
hfs_btree_write(tree);
return 0;
}
static int hfsplus_write_inode(struct inode *inode,
struct writeback_control *wbc)
{
struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb);
struct hfsplus_vh *vhdr;
int ret = 0;
dprint(DBG_INODE, "hfsplus_write_inode: %lu\n", inode->i_ino);
hfsplus_ext_write_extent(inode);
if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID) {
if (inode->i_ino >= HFSPLUS_FIRSTUSER_CNID ||
inode->i_ino == HFSPLUS_ROOT_CNID)
return hfsplus_cat_write_inode(inode);
}
vhdr = sbi->s_vhdr;
switch (inode->i_ino) {
case HFSPLUS_ROOT_CNID:
ret = hfsplus_cat_write_inode(inode);
break;
case HFSPLUS_EXT_CNID:
if (vhdr->ext_file.total_size != cpu_to_be64(inode->i_size)) {
sbi->flags |= HFSPLUS_SB_WRITEBACKUP;
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, &vhdr->ext_file);
hfs_btree_write(sbi->ext_tree);
break;
case HFSPLUS_CAT_CNID:
if (vhdr->cat_file.total_size != cpu_to_be64(inode->i_size)) {
sbi->flags |= HFSPLUS_SB_WRITEBACKUP;
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, &vhdr->cat_file);
hfs_btree_write(sbi->cat_tree);
break;
case HFSPLUS_ALLOC_CNID:
if (vhdr->alloc_file.total_size != cpu_to_be64(inode->i_size)) {
sbi->flags |= HFSPLUS_SB_WRITEBACKUP;
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, &vhdr->alloc_file);
break;
case HFSPLUS_START_CNID:
if (vhdr->start_file.total_size != cpu_to_be64(inode->i_size)) {
sbi->flags |= HFSPLUS_SB_WRITEBACKUP;
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, &vhdr->start_file);
break;
case HFSPLUS_ATTR_CNID:
if (vhdr->attr_file.total_size != cpu_to_be64(inode->i_size)) {
sbi->flags |= HFSPLUS_SB_WRITEBACKUP;
inode->i_sb->s_dirt = 1;
}
hfsplus_inode_write_fork(inode, &vhdr->attr_file);
hfs_btree_write(sbi->attr_tree);
break;
}
return ret;
else
return hfsplus_system_write_inode(inode);
}
static void hfsplus_evict_inode(struct inode *inode)