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[readdir] convert f2fs

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-05-17 18:02:17 -04:00
parent 8f29843a51
commit 6f7f231e7b
2 changed files with 22 additions and 35 deletions
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21
fs/cramfs/inode.c
View File

@ -349,18 +349,17 @@ static int cramfs_statfs(struct dentry *dentry, struct kstatfs *buf)
/*
* Read a cramfs directory entry.
*/
static int cramfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
static int cramfs_readdir(struct file *file, struct dir_context *ctx)
{
struct inode *inode = file_inode(filp);
struct inode *inode = file_inode(file);
struct super_block *sb = inode->i_sb;
char *buf;
unsigned int offset;
int copied;
/* Offset within the thing. */
offset = filp->f_pos;
if (offset >= inode->i_size)
if (ctx->pos >= inode->i_size)
return 0;
offset = ctx->pos;
/* Directory entries are always 4-byte aligned */
if (offset & 3)
return -EINVAL;
@ -369,14 +368,13 @@ static int cramfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
if (!buf)
return -ENOMEM;
copied = 0;
while (offset < inode->i_size) {
struct cramfs_inode *de;
unsigned long nextoffset;
char *name;
ino_t ino;
umode_t mode;
int namelen, error;
int namelen;
mutex_lock(&read_mutex);
de = cramfs_read(sb, OFFSET(inode) + offset, sizeof(*de)+CRAMFS_MAXPATHLEN);
@ -402,13 +400,10 @@ static int cramfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
break;
namelen--;
}
error = filldir(dirent, buf, namelen, offset, ino, mode >> 12);
if (error)
if (!dir_emit(ctx, buf, namelen, ino, mode >> 12))
break;
offset = nextoffset;
filp->f_pos = offset;
copied++;
ctx->pos = offset = nextoffset;
}
kfree(buf);
return 0;
@ -547,7 +542,7 @@ static const struct address_space_operations cramfs_aops = {
static const struct file_operations cramfs_directory_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = cramfs_readdir,
.iterate = cramfs_readdir,
};
static const struct inode_operations cramfs_dir_inode_operations = {

36
fs/f2fs/dir.c
View File

@ -591,24 +591,19 @@ bool f2fs_empty_dir(struct inode *dir)
return true;
}
static int f2fs_readdir(struct file *file, void *dirent, filldir_t filldir)
static int f2fs_readdir(struct file *file, struct dir_context *ctx)
{
unsigned long pos = file->f_pos;
struct inode *inode = file_inode(file);
unsigned long npages = dir_blocks(inode);
unsigned char *types = NULL;
unsigned int bit_pos = 0, start_bit_pos = 0;
int over = 0;
struct f2fs_dentry_block *dentry_blk = NULL;
struct f2fs_dir_entry *de = NULL;
struct page *dentry_page = NULL;
unsigned int n = 0;
unsigned int n = ((unsigned long)ctx->pos / NR_DENTRY_IN_BLOCK);
unsigned char d_type = DT_UNKNOWN;
int slots;
types = f2fs_filetype_table;
bit_pos = (pos % NR_DENTRY_IN_BLOCK);
n = (pos / NR_DENTRY_IN_BLOCK);
bit_pos = ((unsigned long)ctx->pos % NR_DENTRY_IN_BLOCK);
for ( ; n < npages; n++) {
dentry_page = get_lock_data_page(inode, n);
@ -618,31 +613,28 @@ static int f2fs_readdir(struct file *file, void *dirent, filldir_t filldir)
start_bit_pos = bit_pos;
dentry_blk = kmap(dentry_page);
while (bit_pos < NR_DENTRY_IN_BLOCK) {
d_type = DT_UNKNOWN;
bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap,
NR_DENTRY_IN_BLOCK,
bit_pos);
if (bit_pos >= NR_DENTRY_IN_BLOCK)
break;
ctx->pos += bit_pos - start_bit_pos;
de = &dentry_blk->dentry[bit_pos];
if (types && de->file_type < F2FS_FT_MAX)
d_type = types[de->file_type];
over = filldir(dirent,
dentry_blk->filename[bit_pos],
le16_to_cpu(de->name_len),
(n * NR_DENTRY_IN_BLOCK) + bit_pos,
le32_to_cpu(de->ino), d_type);
if (over) {
file->f_pos += bit_pos - start_bit_pos;
if (de->file_type < F2FS_FT_MAX)
d_type = f2fs_filetype_table[de->file_type];
else
d_type = DT_UNKNOWN;
if (!dir_emit(ctx,
dentry_blk->filename[bit_pos],
le16_to_cpu(de->name_len),
le32_to_cpu(de->ino), d_type))
goto success;
}
slots = GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
bit_pos += slots;
}
bit_pos = 0;
file->f_pos = (n + 1) * NR_DENTRY_IN_BLOCK;
ctx->pos = (n + 1) * NR_DENTRY_IN_BLOCK;
kunmap(dentry_page);
f2fs_put_page(dentry_page, 1);
dentry_page = NULL;
@ -659,7 +651,7 @@ success:
const struct file_operations f2fs_dir_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = f2fs_readdir,
.iterate = f2fs_readdir,
.fsync = f2fs_sync_file,
.unlocked_ioctl = f2fs_ioctl,
};