[PATCH v4 4/6] f2fs: add f2fs_ioc_get_compress_blocks

Sheng Yong
2023-06-12T03:02:29Z

This patch adds f2fs_ioc_get_compress_blocks() to provide a common
f2fs_get_compress_blocks().

Signed-off-by: Sheng Yong <shengyong@oppo.com>
---
fs/f2fs/file.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 23c68ee946e58..f8aa842b5d233 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -3376,18 +3376,29 @@ static int f2fs_ioc_setfslabel(struct file *filp, unsigned long arg)
return err;
}

-static int f2fs_get_compress_blocks(struct file *filp, unsigned long arg)
+static int f2fs_get_compress_blocks(struct inode *inode, __u64 *blocks)
{
- struct inode *inode = file_inode(filp);
- __u64 blocks;
-
if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
return -EOPNOTSUPP;

if (!f2fs_compressed_file(inode))
return -EINVAL;

- blocks = atomic_read(&F2FS_I(inode)->i_compr_blocks);
+ *blocks = atomic_read(&F2FS_I(inode)->i_compr_blocks);
+
+ return 0;
+}
+
+static int f2fs_ioc_get_compress_blocks(struct file *filp, unsigned long arg)
+{
+ struct inode *inode = file_inode(filp);
+ __u64 blocks;
+ int ret;
+
+ ret = f2fs_get_compress_blocks(inode, &blocks);
+ if (ret < 0)
+ return ret;
+
return put_user(blocks, (u64 __user *)arg);
}

@@ -4239,7 +4250,7 @@ static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
case FS_IOC_SETFSLABEL:
return f2fs_ioc_setfslabel(filp, arg);
case F2FS_IOC_GET_COMPRESS_BLOCKS:
- return f2fs_get_compress_blocks(filp, arg);
+ return f2fs_ioc_get_compress_blocks(filp, arg);
case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
return f2fs_release_compress_blocks(filp, arg);
case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
--
2.40.1