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

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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.

Bug: 240921972
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
(cherry picked from commit 376523b97c005fa57bb2f8e70f61ab965f16e160)
Change-Id: Ieb0f8945175ea5ccb0060690e882f054360fb8f0
This commit is contained in:
Jaegeuk Kim
2022-08-03 20:33:54 -07:00
committed by Treehugger Robot
parent 406e9b3d0b
commit a48ad117ec
2 changed files with 8 additions and 3 deletions
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7
fs/f2fs/f2fs.h
View File

@@ -4277,8 +4277,9 @@ 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 =
@@ -4301,6 +4302,10 @@ 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)

4
fs/f2fs/file.c
View File

@@ -1872,8 +1872,8 @@ static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
return -EINVAL;
if (S_ISREG(inode->i_mode) && inode->i_size)
return -EINVAL;
set_compress_context(inode);
if (set_compress_context(inode))
return -EOPNOTSUPP;
}
}
if ((iflags ^ masked_flags) & F2FS_NOCOMP_FL) {