diff options
| -rw-r--r-- | fs/inode.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/inode.c b/fs/inode.c index 0cbce5a0a23c..446d05e25f39 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -2239,6 +2239,14 @@ int vfs_ioc_fssetxattr_check(struct inode *inode, const struct fsxattr *old_fa, !S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode)) return -EINVAL; + /* + * It is only valid to set the DAX flag on regular files and + * directories on filesystems. + */ + if ((fa->fsx_xflags & FS_XFLAG_DAX) && + !(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode))) + return -EINVAL; + /* Extent size hints of zero turn off the flags. */ if (fa->fsx_extsize == 0) fa->fsx_xflags &= ~(FS_XFLAG_EXTSIZE | FS_XFLAG_EXTSZINHERIT); |