| Message ID | 151937026590.18973.14558952639668942540.stgit@dwillia2-desk3.amr.corp.intel.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 230f5a8969d8 |
| Headers | show |
diff --git a/include/linux/fs.h b/include/linux/fs.h index 2a815560fda0..79c413985305 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3198,7 +3198,7 @@ static inline bool vma_is_fsdax(struct vm_area_struct *vma) if (!vma_is_dax(vma)) return false; inode = file_inode(vma->vm_file); - if (inode->i_mode == S_IFCHR) + if (S_ISCHR(inode->i_mode)) return false; /* device-dax */ return true; }
Gerd reports that ->i_mode may contain other bits besides S_IFCHR. Use S_ISCHR() instead. Otherwise, get_user_pages_longterm() may fail on device-dax instances when those are meant to be explicitly allowed. Fixes: 2bb6d2837083 ("mm: introduce get_user_pages_longterm") Cc: <stable@vger.kernel.org> Reported-by: Gerd Rausch <gerd.rausch@oracle.com> Reported-by: Haozhong Zhang <haozhong.zhang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)