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Add new helper simplefs_inode_search()

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This commit is contained in:
Azat Khuzhin 2013-09-26 00:30:55 +04:00
parent c199cecbce
commit f9aa71628d
1 changed files with 26 additions and 19 deletions
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45
simple.c
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@ -41,6 +41,24 @@ void simplefs_sb_sync(struct super_block *vsb)
brelse(bh);
}
struct simplefs_inode *simplefs_inode_search(struct super_block *sb,
struct simplefs_inode *start,
struct simplefs_inode *search)
{
uint64_t count = 0;
while (start->inode_no != search->inode_no
&& count < SIMPLEFS_SB(sb)->inodes_count) {
count++;
start++;
}
if (start->inode_no == search->inode_no) {
return start;
}
return NULL;
}
void simplefs_inode_add(struct super_block *vsb, struct simplefs_inode *inode)
{
struct simplefs_super_block *sb = SIMPLEFS_SB(vsb);
@ -305,7 +323,6 @@ ssize_t simplefs_write(struct file * filp, const char __user * buf, size_t len,
struct super_block *sb;
char *buffer;
int count;
int retval;
@ -360,22 +377,17 @@ ssize_t simplefs_write(struct file * filp, const char __user * buf, size_t len,
sfs_inode->file_size = *ppos;
inode_iterator = (struct simplefs_inode *)bh->b_data;
if (mutex_lock_interruptible(&simplefs_sb_lock)) {
printk(KERN_ERR "Failed to acquire mutex lock %s +%d\n",
__FILE__, __LINE__);
return -EINTR;
}
count = 0;
while (inode_iterator->inode_no != sfs_inode->inode_no
&& count < SIMPLEFS_SB(sb)->inodes_count) {
count++;
inode_iterator++;
}
inode_iterator = simplefs_inode_search(sb,
(struct simplefs_inode *)bh->b_data,
sfs_inode);
if (likely(count < SIMPLEFS_SB(sb)->inodes_count)) {
if (likely(inode_iterator)) {
inode_iterator->file_size = sfs_inode->file_size;
printk(KERN_INFO
"The new filesize that is written is: [%llu] and len was: [%lu]\n",
@ -539,8 +551,6 @@ static int simplefs_create_fs_object(struct inode *dir, struct dentry *dentry,
bh = sb_bread(sb, SIMPLEFS_INODESTORE_BLOCK_NUMBER);
inode_iterator = (struct simplefs_inode *)bh->b_data;
if (mutex_lock_interruptible(&simplefs_sb_lock)) {
mutex_unlock(&simplefs_inodes_mgmt_lock);
mutex_unlock(&simplefs_directory_children_update_lock);
@ -549,14 +559,11 @@ static int simplefs_create_fs_object(struct inode *dir, struct dentry *dentry,
return -EINTR;
}
count = 0;
while (inode_iterator->inode_no != parent_dir_inode->inode_no
&& count < SIMPLEFS_SB(sb)->inodes_count) {
count++;
inode_iterator++;
}
inode_iterator = simplefs_inode_search(sb,
(struct simplefs_inode *)bh->b_data,
parent_dir_inode);
if (likely(inode_iterator->inode_no == parent_dir_inode->inode_no)) {
if (inode_iterator) {
parent_dir_inode->dir_children_count++;
inode_iterator->dir_children_count =
parent_dir_inode->dir_children_count;