diff options
| author | Hugh Dickins <hugh@veritas.com> | 2005-12-02 15:59:59 +0000 |
|---|---|---|
| committer | James Bottomley <jejb@titanic.(none)> | 2005-12-02 10:24:14 -0600 |
| commit | 032c09d76cdb448484859cc84dac4bba8f5f8f14 (patch) | |
| tree | d6dded3df8c7240a17554b25ece04c9c766e21af /lib/bust_spinlocks.c | |
| parent | 6bc733e9f71c937f3c64159bf1e569321726a44c (diff) | |
[SCSI] sg and st unmap_user_pages allow PageReserved
2.6.15-rc1 made sg's st_unmap_user_pages and st's sgl_unmap_user_pages
BUG on a PageReserved page. But that's wrong: they could be unmapping
the ZERO_PAGE, which is marked PG_reserved; and perhaps others (while
get_user_pages is still permitted on VM_PFNMAP areas - that may change).
More change is needed here: sg claims to dirty even pages written from,
and st claims not to dirty even pages read into; and SetPageDirty is not
adequate for this nowadays. Fixes to those follow in a later patch: for
the moment just fix the 2.6.15 regression.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Acked-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'lib/bust_spinlocks.c')
0 files changed, 0 insertions, 0 deletions