f2fs: support iflag change given the mask

In f2fs_fileattr_set(),

	if (!fa->flags_valid)
		mask &= FS_COMMON_FL;

In this case, we can set supported flags by mask only instead of BUG_ON.

/* Flags shared betwen flags/xflags */
	(FS_SYNC_FL | FS_IMMUTABLE_FL | FS_APPEND_FL | \
	 FS_NODUMP_FL |	FS_NOATIME_FL | FS_DAX_FL | \
	 FS_PROJINHERIT_FL)

Fixes: 9b1bb01c8ae7 ("f2fs: convert to fileattr")
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 44a4650..ceb575f 100644 (file)
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1817,7 +1817,8 @@ static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
        struct f2fs_inode_info *fi = F2FS_I(inode);
        u32 masked_flags = fi->i_flags & mask;
 
-       f2fs_bug_on(F2FS_I_SB(inode), (iflags & ~mask));
+       /* mask can be shrunk by flags_valid selector */
+       iflags &= mask;
 
        /* Is it quota file? Do not allow user to mess with it */
        if (IS_NOQUOTA(inode))