summaryrefslogtreecommitdiffstats
path: root/fs/nilfs2/dir.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/nilfs2/dir.c')
-rw-r--r--fs/nilfs2/dir.c59
1 files changed, 29 insertions, 30 deletions
diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c
index 6723d45a631a..e506f4f7120a 100644
--- a/fs/nilfs2/dir.c
+++ b/fs/nilfs2/dir.c
@@ -13,11 +13,7 @@
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Modified for NILFS by Amagai Yoshiji <amagai@osrg.net>
+ * Modified for NILFS by Amagai Yoshiji.
*/
/*
* linux/fs/ext2/dir.c
@@ -50,7 +46,7 @@
* nilfs uses block-sized chunks. Arguably, sector-sized ones would be
* more robust, but we have what we have
*/
-static inline unsigned nilfs_chunk_size(struct inode *inode)
+static inline unsigned int nilfs_chunk_size(struct inode *inode)
{
return inode->i_sb->s_blocksize;
}
@@ -65,9 +61,9 @@ static inline void nilfs_put_page(struct page *page)
* Return the offset into page `page_nr' of the last valid
* byte in that page, plus one.
*/
-static unsigned nilfs_last_byte(struct inode *inode, unsigned long page_nr)
+static unsigned int nilfs_last_byte(struct inode *inode, unsigned long page_nr)
{
- unsigned last_byte = inode->i_size;
+ unsigned int last_byte = inode->i_size;
last_byte -= page_nr << PAGE_SHIFT;
if (last_byte > PAGE_SIZE)
@@ -75,20 +71,22 @@ static unsigned nilfs_last_byte(struct inode *inode, unsigned long page_nr)
return last_byte;
}
-static int nilfs_prepare_chunk(struct page *page, unsigned from, unsigned to)
+static int nilfs_prepare_chunk(struct page *page, unsigned int from,
+ unsigned int to)
{
loff_t pos = page_offset(page) + from;
+
return __block_write_begin(page, pos, to - from, nilfs_get_block);
}
static void nilfs_commit_chunk(struct page *page,
struct address_space *mapping,
- unsigned from, unsigned to)
+ unsigned int from, unsigned int to)
{
struct inode *dir = mapping->host;
loff_t pos = page_offset(page) + from;
- unsigned len = to - from;
- unsigned nr_dirty, copied;
+ unsigned int len = to - from;
+ unsigned int nr_dirty, copied;
int err;
nr_dirty = nilfs_page_count_clean_buffers(page, from, to);
@@ -106,10 +104,10 @@ static bool nilfs_check_page(struct page *page)
{
struct inode *dir = page->mapping->host;
struct super_block *sb = dir->i_sb;
- unsigned chunk_size = nilfs_chunk_size(dir);
+ unsigned int chunk_size = nilfs_chunk_size(dir);
char *kaddr = page_address(page);
- unsigned offs, rec_len;
- unsigned limit = PAGE_SIZE;
+ unsigned int offs, rec_len;
+ unsigned int limit = PAGE_SIZE;
struct nilfs_dir_entry *p;
char *error;
@@ -259,7 +257,6 @@ static int nilfs_readdir(struct file *file, struct dir_context *ctx)
unsigned int offset = pos & ~PAGE_MASK;
unsigned long n = pos >> PAGE_SHIFT;
unsigned long npages = dir_pages(inode);
-/* unsigned chunk_mask = ~(nilfs_chunk_size(inode)-1); */
if (pos > inode->i_size - NILFS_DIR_REC_LEN(1))
return 0;
@@ -321,7 +318,7 @@ nilfs_find_entry(struct inode *dir, const struct qstr *qstr,
{
const unsigned char *name = qstr->name;
int namelen = qstr->len;
- unsigned reclen = NILFS_DIR_REC_LEN(namelen);
+ unsigned int reclen = NILFS_DIR_REC_LEN(namelen);
unsigned long start, n;
unsigned long npages = dir_pages(dir);
struct page *page = NULL;
@@ -340,6 +337,7 @@ nilfs_find_entry(struct inode *dir, const struct qstr *qstr,
n = start;
do {
char *kaddr;
+
page = nilfs_get_page(dir, n);
if (!IS_ERR(page)) {
kaddr = page_address(page);
@@ -410,8 +408,8 @@ ino_t nilfs_inode_by_name(struct inode *dir, const struct qstr *qstr)
void nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de,
struct page *page, struct inode *inode)
{
- unsigned from = (char *) de - (char *) page_address(page);
- unsigned to = from + nilfs_rec_len_from_disk(de->rec_len);
+ unsigned int from = (char *)de - (char *)page_address(page);
+ unsigned int to = from + nilfs_rec_len_from_disk(de->rec_len);
struct address_space *mapping = page->mapping;
int err;
@@ -433,15 +431,15 @@ int nilfs_add_link(struct dentry *dentry, struct inode *inode)
struct inode *dir = d_inode(dentry->d_parent);
const unsigned char *name = dentry->d_name.name;
int namelen = dentry->d_name.len;
- unsigned chunk_size = nilfs_chunk_size(dir);
- unsigned reclen = NILFS_DIR_REC_LEN(namelen);
+ unsigned int chunk_size = nilfs_chunk_size(dir);
+ unsigned int reclen = NILFS_DIR_REC_LEN(namelen);
unsigned short rec_len, name_len;
struct page *page = NULL;
struct nilfs_dir_entry *de;
unsigned long npages = dir_pages(dir);
unsigned long n;
char *kaddr;
- unsigned from, to;
+ unsigned int from, to;
int err;
/*
@@ -533,13 +531,14 @@ int nilfs_delete_entry(struct nilfs_dir_entry *dir, struct page *page)
struct address_space *mapping = page->mapping;
struct inode *inode = mapping->host;
char *kaddr = page_address(page);
- unsigned from = ((char *)dir - kaddr) & ~(nilfs_chunk_size(inode) - 1);
- unsigned to = ((char *)dir - kaddr) +
- nilfs_rec_len_from_disk(dir->rec_len);
- struct nilfs_dir_entry *pde = NULL;
- struct nilfs_dir_entry *de = (struct nilfs_dir_entry *)(kaddr + from);
+ unsigned int from, to;
+ struct nilfs_dir_entry *de, *pde = NULL;
int err;
+ from = ((char *)dir - kaddr) & ~(nilfs_chunk_size(inode) - 1);
+ to = ((char *)dir - kaddr) + nilfs_rec_len_from_disk(dir->rec_len);
+ de = (struct nilfs_dir_entry *)(kaddr + from);
+
while ((char *)de < (char *)dir) {
if (de->rec_len == 0) {
nilfs_error(inode->i_sb, __func__,
@@ -572,7 +571,7 @@ int nilfs_make_empty(struct inode *inode, struct inode *parent)
{
struct address_space *mapping = inode->i_mapping;
struct page *page = grab_cache_page(mapping, 0);
- unsigned chunk_size = nilfs_chunk_size(inode);
+ unsigned int chunk_size = nilfs_chunk_size(inode);
struct nilfs_dir_entry *de;
int err;
void *kaddr;
@@ -630,8 +629,8 @@ int nilfs_empty_dir(struct inode *inode)
while ((char *)de <= kaddr) {
if (de->rec_len == 0) {
nilfs_error(inode->i_sb, __func__,
- "zero-length directory entry "
- "(kaddr=%p, de=%p)\n", kaddr, de);
+ "zero-length directory entry (kaddr=%p, de=%p)",
+ kaddr, de);
goto not_empty;
}
if (de->inode != 0) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 12:31:33 +0100