Commit 912f0d65 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: do not set compression bit if kernel doesn't support 



If kernel doesn't have CONFIG_F2FS_FS_COMPRESSION, a file having FS_COMPR_FL via
ioctl(FS_IOC_SETFLAGS) is unaccessible due to f2fs_is_compress_backend_ready().
Let's avoid it.

Reviewed-by: default avatarChao Yu <chao@kernel.org>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent dbf8e63f

fs/f2fs/f2fs.h

+6 −1
Original line number Diff line number Diff line
@@ -4292,8 +4292,9 @@ static inline void f2fs_update_extent_tree_range_compressed(struct inode *inode, 
				unsigned int c_len) { }

#endif



static inline void set_compress_context(struct inode *inode)

static inline int set_compress_context(struct inode *inode)

{

#ifdef CONFIG_F2FS_FS_COMPRESSION

	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);



	F2FS_I(inode)->i_compress_algorithm =
@@ -4316,6 +4317,10 @@ static inline void set_compress_context(struct inode *inode) 
	stat_inc_compr_inode(inode);

	inc_compr_inode_stat(inode);

	f2fs_mark_inode_dirty_sync(inode, true);

	return 0;

#else

	return -EOPNOTSUPP;

#endif

}



static inline bool f2fs_disable_compressed_file(struct inode *inode)

fs/f2fs/file.c

+2 −2
Original line number Diff line number Diff line
@@ -1878,8 +1878,8 @@ static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask) 
				return -EINVAL;

			if (S_ISREG(inode->i_mode) && F2FS_HAS_BLOCKS(inode))

				return -EINVAL;



			set_compress_context(inode);

			if (set_compress_context(inode))

				return -EOPNOTSUPP;

		}

	}