| Message ID | 1538086549-100536-1-git-send-email-yang.shi@linux.alibaba.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] mm: dax: add comment for PFN_SPECIAL | expand |
On Thu, Sep 27, 2018 at 3:17 PM <yang.shi@linux.alibaba.com> wrote: > > The comment for PFN_SPECIAL is missed in pfn_t.h. Add comment to get > consistent with other pfn flags. > > Suggested-by: Dan Williams <dan.j.williams@intel.com> > Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com> > --- > v2: rephrase the comment per Dan Looks good for the -mm tree. Reviewed-by: Dan Williams <dan.j.williams@intel.com> > > include/linux/pfn_t.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/include/linux/pfn_t.h b/include/linux/pfn_t.h > index 21713dc..d6cc4b5 100644 > --- a/include/linux/pfn_t.h > +++ b/include/linux/pfn_t.h > @@ -9,6 +9,8 @@ > * PFN_SG_LAST - pfn references a page and is the last scatterlist entry > * PFN_DEV - pfn is not covered by system memmap by default > * PFN_MAP - pfn has a dynamic page mapping established by a device driver > + * PFN_SPECIAL - for CONFIG_FS_DAX_LIMITED builds to allow XIP, but not > + * get_user_pages > */ > #define PFN_FLAGS_MASK (((u64) ~PAGE_MASK) << (BITS_PER_LONG_LONG - PAGE_SHIFT)) > #define PFN_SG_CHAIN (1ULL << (BITS_PER_LONG_LONG - 1)) > -- > 1.8.3.1 >
diff --git a/include/linux/pfn_t.h b/include/linux/pfn_t.h index 21713dc..d6cc4b5 100644 --- a/include/linux/pfn_t.h +++ b/include/linux/pfn_t.h @@ -9,6 +9,8 @@ * PFN_SG_LAST - pfn references a page and is the last scatterlist entry * PFN_DEV - pfn is not covered by system memmap by default * PFN_MAP - pfn has a dynamic page mapping established by a device driver + * PFN_SPECIAL - for CONFIG_FS_DAX_LIMITED builds to allow XIP, but not + * get_user_pages */ #define PFN_FLAGS_MASK (((u64) ~PAGE_MASK) << (BITS_PER_LONG_LONG - PAGE_SHIFT)) #define PFN_SG_CHAIN (1ULL << (BITS_PER_LONG_LONG - 1))
The comment for PFN_SPECIAL is missed in pfn_t.h. Add comment to get consistent with other pfn flags. Suggested-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com> --- v2: rephrase the comment per Dan include/linux/pfn_t.h | 2 ++ 1 file changed, 2 insertions(+)