#include "gc.h"
#include "trace.h"
#include <trace/events/f2fs.h>
+#include <uapi/linux/f2fs.h>
static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
{
goto fail;
/* handle inline data case */
- if (f2fs_has_inline_data(inode) && whence == SEEK_HOLE) {
- data_ofs = isize;
- goto found;
+ if (f2fs_has_inline_data(inode)) {
+ if (whence == SEEK_HOLE) {
+ data_ofs = isize;
+ goto found;
+ } else if (whence == SEEK_DATA) {
+ data_ofs = offset;
+ goto found;
+ }
}
pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
return ret;
}
-static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
+static int __f2fs_ioc_gc_range(struct file *filp, struct f2fs_gc_range *range)
{
- struct inode *inode = file_inode(filp);
- struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
- struct f2fs_gc_range range;
+ struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
u64 end;
int ret;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
-
- if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
- sizeof(range)))
- return -EFAULT;
-
if (f2fs_readonly(sbi->sb))
return -EROFS;
- end = range.start + range.len;
- if (end < range.start || range.start < MAIN_BLKADDR(sbi) ||
+ end = range->start + range->len;
+ if (end < range->start || range->start < MAIN_BLKADDR(sbi) ||
end >= MAX_BLKADDR(sbi))
return -EINVAL;
return ret;
do_more:
- if (!range.sync) {
+ if (!range->sync) {
if (!down_write_trylock(&sbi->gc_lock)) {
ret = -EBUSY;
goto out;
down_write(&sbi->gc_lock);
}
- ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
+ ret = f2fs_gc(sbi, range->sync, true, GET_SEGNO(sbi, range->start));
if (ret) {
if (ret == -EBUSY)
ret = -EAGAIN;
goto out;
}
- range.start += BLKS_PER_SEC(sbi);
- if (range.start <= end)
+ range->start += BLKS_PER_SEC(sbi);
+ if (range->start <= end)
goto do_more;
out:
mnt_drop_write_file(filp);
return ret;
}
+static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
+{
+ struct f2fs_gc_range range;
+
+ if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
+ sizeof(range)))
+ return -EFAULT;
+ return __f2fs_ioc_gc_range(filp, &range);
+}
+
static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
{
struct inode *inode = file_inode(filp);
return ret;
}
-static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
+static int __f2fs_ioc_move_range(struct file *filp,
+ struct f2fs_move_range *range)
{
- struct f2fs_move_range range;
struct fd dst;
int err;
!(filp->f_mode & FMODE_WRITE))
return -EBADF;
- if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
- sizeof(range)))
- return -EFAULT;
-
- dst = fdget(range.dst_fd);
+ dst = fdget(range->dst_fd);
if (!dst.file)
return -EBADF;
if (err)
goto err_out;
- err = f2fs_move_file_range(filp, range.pos_in, dst.file,
- range.pos_out, range.len);
+ err = f2fs_move_file_range(filp, range->pos_in, dst.file,
+ range->pos_out, range->len);
mnt_drop_write_file(filp);
- if (err)
- goto err_out;
-
- if (copy_to_user((struct f2fs_move_range __user *)arg,
- &range, sizeof(range)))
- err = -EFAULT;
err_out:
fdput(dst);
return err;
}
+static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
+{
+ struct f2fs_move_range range;
+
+ if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
+ sizeof(range)))
+ return -EFAULT;
+ return __f2fs_ioc_move_range(filp, &range);
+}
+
static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
{
struct inode *inode = file_inode(filp);
return ret;
}
-long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+static int f2fs_ioc_get_compress_option(struct file *filp, unsigned long arg)
{
- if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
- return -EIO;
- if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
- return -ENOSPC;
+ struct inode *inode = file_inode(filp);
+ struct f2fs_comp_option option;
+
+ if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
+ return -EOPNOTSUPP;
+
+ inode_lock_shared(inode);
+
+ if (!f2fs_compressed_file(inode)) {
+ inode_unlock_shared(inode);
+ return -ENODATA;
+ }
+
+ option.algorithm = F2FS_I(inode)->i_compress_algorithm;
+ option.log_cluster_size = F2FS_I(inode)->i_log_cluster_size;
+
+ inode_unlock_shared(inode);
+
+ if (copy_to_user((struct f2fs_comp_option __user *)arg, &option,
+ sizeof(option)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
+{
+ struct inode *inode = file_inode(filp);
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ struct f2fs_comp_option option;
+ int ret = 0;
+ if (!f2fs_sb_has_compression(sbi))
+ return -EOPNOTSUPP;
+
+ if (!(filp->f_mode & FMODE_WRITE))
+ return -EBADF;
+
+ if (copy_from_user(&option, (struct f2fs_comp_option __user *)arg,
+ sizeof(option)))
+ return -EFAULT;
+
+ if (!f2fs_compressed_file(inode) ||
+ option.log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
+ option.log_cluster_size > MAX_COMPRESS_LOG_SIZE ||
+ option.algorithm >= COMPRESS_MAX)
+ return -EINVAL;
+
+ file_start_write(filp);
+ inode_lock(inode);
+
+ if (f2fs_is_mmap_file(inode) || get_dirty_pages(inode)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ if (inode->i_size != 0) {
+ ret = -EFBIG;
+ goto out;
+ }
+
+ F2FS_I(inode)->i_compress_algorithm = option.algorithm;
+ F2FS_I(inode)->i_log_cluster_size = option.log_cluster_size;
+ F2FS_I(inode)->i_cluster_size = 1 << option.log_cluster_size;
+ f2fs_mark_inode_dirty_sync(inode, true);
+
+ if (!f2fs_is_compress_backend_ready(inode))
+ f2fs_warn(sbi, "compression algorithm is successfully set, "
+ "but current kernel doesn't support this algorithm.");
+out:
+ inode_unlock(inode);
+ file_end_write(filp);
+
+ return ret;
+}
+
+static int redirty_blocks(struct inode *inode, pgoff_t page_idx, int len)
+{
+ DEFINE_READAHEAD(ractl, NULL, inode->i_mapping, page_idx);
+ struct address_space *mapping = inode->i_mapping;
+ struct page *page;
+ pgoff_t redirty_idx = page_idx;
+ int i, page_len = 0, ret = 0;
+
+ page_cache_ra_unbounded(&ractl, len, 0);
+
+ for (i = 0; i < len; i++, page_idx++) {
+ page = read_cache_page(mapping, page_idx, NULL, NULL);
+ if (IS_ERR(page)) {
+ ret = PTR_ERR(page);
+ break;
+ }
+ page_len++;
+ }
+
+ for (i = 0; i < page_len; i++, redirty_idx++) {
+ page = find_lock_page(mapping, redirty_idx);
+ if (!page)
+ ret = -ENOENT;
+ set_page_dirty(page);
+ f2fs_put_page(page, 1);
+ f2fs_put_page(page, 0);
+ }
+
+ return ret;
+}
+
+static int f2fs_ioc_decompress_file(struct file *filp, unsigned long arg)
+{
+ struct inode *inode = file_inode(filp);
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ struct f2fs_inode_info *fi = F2FS_I(inode);
+ pgoff_t page_idx = 0, last_idx;
+ unsigned int blk_per_seg = sbi->blocks_per_seg;
+ int cluster_size = F2FS_I(inode)->i_cluster_size;
+ int count, ret;
+
+ if (!f2fs_sb_has_compression(sbi) ||
+ F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
+ return -EOPNOTSUPP;
+
+ if (!(filp->f_mode & FMODE_WRITE))
+ return -EBADF;
+
+ if (!f2fs_compressed_file(inode))
+ return -EINVAL;
+
+ f2fs_balance_fs(F2FS_I_SB(inode), true);
+
+ file_start_write(filp);
+ inode_lock(inode);
+
+ if (!f2fs_is_compress_backend_ready(inode)) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (f2fs_is_mmap_file(inode)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
+ if (ret)
+ goto out;
+
+ if (!atomic_read(&fi->i_compr_blocks))
+ goto out;
+
+ last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
+
+ count = last_idx - page_idx;
+ while (count) {
+ int len = min(cluster_size, count);
+
+ ret = redirty_blocks(inode, page_idx, len);
+ if (ret < 0)
+ break;
+
+ if (get_dirty_pages(inode) >= blk_per_seg)
+ filemap_fdatawrite(inode->i_mapping);
+
+ count -= len;
+ page_idx += len;
+ }
+
+ if (!ret)
+ ret = filemap_write_and_wait_range(inode->i_mapping, 0,
+ LLONG_MAX);
+
+ if (ret)
+ f2fs_warn(sbi, "%s: The file might be partially decompressed "
+ "(errno=%d). Please delete the file.\n",
+ __func__, ret);
+out:
+ inode_unlock(inode);
+ file_end_write(filp);
+
+ return ret;
+}
+
+static int f2fs_ioc_compress_file(struct file *filp, unsigned long arg)
+{
+ struct inode *inode = file_inode(filp);
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ pgoff_t page_idx = 0, last_idx;
+ unsigned int blk_per_seg = sbi->blocks_per_seg;
+ int cluster_size = F2FS_I(inode)->i_cluster_size;
+ int count, ret;
+
+ if (!f2fs_sb_has_compression(sbi) ||
+ F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
+ return -EOPNOTSUPP;
+
+ if (!(filp->f_mode & FMODE_WRITE))
+ return -EBADF;
+
+ if (!f2fs_compressed_file(inode))
+ return -EINVAL;
+
+ f2fs_balance_fs(F2FS_I_SB(inode), true);
+
+ file_start_write(filp);
+ inode_lock(inode);
+
+ if (!f2fs_is_compress_backend_ready(inode)) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (f2fs_is_mmap_file(inode)) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
+ if (ret)
+ goto out;
+
+ set_inode_flag(inode, FI_ENABLE_COMPRESS);
+
+ last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
+
+ count = last_idx - page_idx;
+ while (count) {
+ int len = min(cluster_size, count);
+
+ ret = redirty_blocks(inode, page_idx, len);
+ if (ret < 0)
+ break;
+
+ if (get_dirty_pages(inode) >= blk_per_seg)
+ filemap_fdatawrite(inode->i_mapping);
+
+ count -= len;
+ page_idx += len;
+ }
+
+ if (!ret)
+ ret = filemap_write_and_wait_range(inode->i_mapping, 0,
+ LLONG_MAX);
+
+ clear_inode_flag(inode, FI_ENABLE_COMPRESS);
+
+ if (ret)
+ f2fs_warn(sbi, "%s: The file might be partially compressed "
+ "(errno=%d). Please delete the file.\n",
+ __func__, ret);
+out:
+ inode_unlock(inode);
+ file_end_write(filp);
+
+ return ret;
+}
+
+static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
switch (cmd) {
case FS_IOC_GETFLAGS:
return f2fs_ioc_getflags(filp, arg);
return f2fs_reserve_compress_blocks(filp, arg);
case F2FS_IOC_SEC_TRIM_FILE:
return f2fs_sec_trim_file(filp, arg);
+ case F2FS_IOC_GET_COMPRESS_OPTION:
+ return f2fs_ioc_get_compress_option(filp, arg);
+ case F2FS_IOC_SET_COMPRESS_OPTION:
+ return f2fs_ioc_set_compress_option(filp, arg);
+ case F2FS_IOC_DECOMPRESS_FILE:
+ return f2fs_ioc_decompress_file(filp, arg);
+ case F2FS_IOC_COMPRESS_FILE:
+ return f2fs_ioc_compress_file(filp, arg);
default:
return -ENOTTY;
}
}
+long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
+ return -EIO;
+ if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
+ return -ENOSPC;
+
+ return __f2fs_ioctl(filp, cmd, arg);
+}
+
static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
}
#ifdef CONFIG_COMPAT
+struct compat_f2fs_gc_range {
+ u32 sync;
+ compat_u64 start;
+ compat_u64 len;
+};
+#define F2FS_IOC32_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11,\
+ struct compat_f2fs_gc_range)
+
+static int f2fs_compat_ioc_gc_range(struct file *file, unsigned long arg)
+{
+ struct compat_f2fs_gc_range __user *urange;
+ struct f2fs_gc_range range;
+ int err;
+
+ urange = compat_ptr(arg);
+ err = get_user(range.sync, &urange->sync);
+ err |= get_user(range.start, &urange->start);
+ err |= get_user(range.len, &urange->len);
+ if (err)
+ return -EFAULT;
+
+ return __f2fs_ioc_gc_range(file, &range);
+}
+
+struct compat_f2fs_move_range {
+ u32 dst_fd;
+ compat_u64 pos_in;
+ compat_u64 pos_out;
+ compat_u64 len;
+};
+#define F2FS_IOC32_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
+ struct compat_f2fs_move_range)
+
+static int f2fs_compat_ioc_move_range(struct file *file, unsigned long arg)
+{
+ struct compat_f2fs_move_range __user *urange;
+ struct f2fs_move_range range;
+ int err;
+
+ urange = compat_ptr(arg);
+ err = get_user(range.dst_fd, &urange->dst_fd);
+ err |= get_user(range.pos_in, &urange->pos_in);
+ err |= get_user(range.pos_out, &urange->pos_out);
+ err |= get_user(range.len, &urange->len);
+ if (err)
+ return -EFAULT;
+
+ return __f2fs_ioc_move_range(file, &range);
+}
+
long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
+ if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
+ return -EIO;
+ if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(file))))
+ return -ENOSPC;
+
switch (cmd) {
case FS_IOC32_GETFLAGS:
cmd = FS_IOC_GETFLAGS;
case FS_IOC32_GETVERSION:
cmd = FS_IOC_GETVERSION;
break;
+ case F2FS_IOC32_GARBAGE_COLLECT_RANGE:
+ return f2fs_compat_ioc_gc_range(file, arg);
+ case F2FS_IOC32_MOVE_RANGE:
+ return f2fs_compat_ioc_move_range(file, arg);
case F2FS_IOC_START_ATOMIC_WRITE:
case F2FS_IOC_COMMIT_ATOMIC_WRITE:
case F2FS_IOC_START_VOLATILE_WRITE:
case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
case FS_IOC_GET_ENCRYPTION_NONCE:
case F2FS_IOC_GARBAGE_COLLECT:
- case F2FS_IOC_GARBAGE_COLLECT_RANGE:
case F2FS_IOC_WRITE_CHECKPOINT:
case F2FS_IOC_DEFRAGMENT:
- case F2FS_IOC_MOVE_RANGE:
case F2FS_IOC_FLUSH_DEVICE:
case F2FS_IOC_GET_FEATURES:
case FS_IOC_FSGETXATTR:
case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
case F2FS_IOC_SEC_TRIM_FILE:
+ case F2FS_IOC_GET_COMPRESS_OPTION:
+ case F2FS_IOC_SET_COMPRESS_OPTION:
+ case F2FS_IOC_DECOMPRESS_FILE:
+ case F2FS_IOC_COMPRESS_FILE:
break;
default:
return -ENOIOCTLCMD;
}
- return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
+ return __f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
}
#endif
projects / linux-2.6-microblaze.git / blobdiff