nilfs_cpfile_get_blkoff(const struct inode *cpfile, __u64 cno)
{
__u64 tcno = cno + NILFS_MDT(cpfile)->mi_first_entry_offset - 1;
+
do_div(tcno, nilfs_cpfile_checkpoints_per_block(cpfile));
return (unsigned long)tcno;
}
nilfs_cpfile_get_offset(const struct inode *cpfile, __u64 cno)
{
__u64 tcno = cno + NILFS_MDT(cpfile)->mi_first_entry_offset - 1;
+
return do_div(tcno, nilfs_cpfile_checkpoints_per_block(cpfile));
}
static int nilfs_prepare_chunk(struct page *page, unsigned from, unsigned to)
{
loff_t pos = page_offset(page) + from;
+
return __block_write_begin(page, pos, to - from, nilfs_get_block);
}
n = start;
do {
char *kaddr;
+
page = nilfs_get_page(dir, n);
if (!IS_ERR(page)) {
kaddr = page_address(page);
nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh)
{
void *kaddr = kmap(ibh->b_page);
+
return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr);
}
int nilfs_permission(struct inode *inode, int mask)
{
struct nilfs_root *root = NILFS_I(inode)->i_root;
+
if ((mask & MAY_WRITE) && root &&
root->cno != NILFS_CPTREE_CURRENT_CNO)
return -EROFS; /* snapshot is not writable */
static inline int nilfs_add_nondir(struct dentry *dentry, struct inode *inode)
{
int err = nilfs_add_link(dentry, inode);
+
if (!err) {
d_instantiate(dentry, inode);
unlock_new_inode(inode);
0, &page, nilfs_get_block);
if (unlikely(err)) {
loff_t isize = inode->i_size;
+
if (pos + blocksize > isize)
nilfs_write_failed(inode->i_mapping,
pos + blocksize);
static void nilfs_construction_timeout(unsigned long data)
{
struct task_struct *p = (struct task_struct *)data;
+
wake_up_process(p);
}
nilfs_sufile_get_blkoff(const struct inode *sufile, __u64 segnum)
{
__u64 t = segnum + NILFS_MDT(sufile)->mi_first_entry_offset;
+
do_div(t, nilfs_sufile_segment_usages_per_block(sufile));
return (unsigned long)t;
}
nilfs_sufile_get_offset(const struct inode *sufile, __u64 segnum)
{
__u64 t = segnum + NILFS_MDT(sufile)->mi_first_entry_offset;
+
return do_div(t, nilfs_sufile_segment_usages_per_block(sufile));
}
while ((p = strsep(&options, ",")) != NULL) {
int token;
+
if (!*p)
continue;
static inline int nilfs_sb_need_update(struct the_nilfs *nilfs)
{
u64 t = get_seconds();
+
return t < nilfs->ns_sbwtime ||
t > nilfs->ns_sbwtime + nilfs->ns_sb_update_freq;
}
static inline int nilfs_sb_will_flip(struct the_nilfs *nilfs)
{
int flip_bits = nilfs->ns_sbwcount & 0x0FL;
+
return (flip_bits != 0x08 && flip_bits != 0x0F);
}