linux-stable.git/net/ceph/pagevec.c, branch linux-4.4.y

mm: replace get_user_pages_unlocked() write/force parameters with gup_flags

2018-12-17T20:55:16+00:00

commit c164154f66f0c9b02673f07aa4f044f1d9c70274 upstream.

This removes the 'write' and 'force' use from get_user_pages_unlocked()
and replaces them with 'gup_flags' to make the use of FOLL_FORCE
explicit in callers as use of this flag can result in surprising
behaviour (and hence bugs) within the mm subsystem.

Signed-off-by: Lorenzo Stoakes 
Reviewed-by: Jan Kara 
Acked-by: Michal Hocko 
Signed-off-by: Linus Torvalds 
[bwh: Backported to 4.4:
 - Also update calls from process_vm_rw_single_vec() and async_pf_execute()
 - Adjust context]
Signed-off-by: Ben Hutchings 
Signed-off-by: Greg Kroah-Hartman

libceph: use kvfree() instead of open-coding it

2015-06-25T08:49:28+00:00

This one sneaked in through vfs tree with commit 2b777c9dd9eb
("ceph_sync_read: stop poking into iov_iter guts").

Signed-off-by: Ilya Dryomov

mm: gup: use get_user_pages_unlocked

2015-02-12T01:06:05+00:00

This allows those get_user_pages calls to pass FAULT_FLAG_ALLOW_RETRY to
the page fault in order to release the mmap_sem during the I/O.

Signed-off-by: Andrea Arcangeli 
Reviewed-by: Kirill A. Shutemov 
Cc: Andres Lagar-Cavilla 
Cc: Peter Feiner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ceph_sync_read: stop poking into iov_iter guts

2014-05-06T21:39:42+00:00

Signed-off-by: Al Viro

libceph: drop return value from page vector copy routines

2013-02-20T01:14:05+00:00

The return values provided for ceph_copy_to_page_vector() and
ceph_copy_from_page_vector() serve no purpose, so get rid of them.

Signed-off-by: Alex Elder 
Reviewed-by: Josh Durgin

libceph: use void pointers in page vector functions

2013-02-20T01:14:04+00:00

The functions used for working with ceph page vectors are defined
with char pointers, but they're really intended to operate on
untyped data.  Change the types of these function parameters
to (void *) to reflect this.

(Note that the functions now assume void pointer arithmetic works
like arithmetic on char pointers.)

Signed-off-by: Alex Elder 
Reviewed-by: Josh Durgin

libceph: fix handling of short returns from get_user_pages

2011-03-03T21:47:39+00:00

get_user_pages() can return fewer pages than we ask for.  We were returning
a bogus pointer/error code in that case.  Instead, loop until we get all
the pages we want or get an error we can return to the caller.

Signed-off-by: Sage Weil

ceph: handle partial result from get_user_pages

2010-12-17T17:55:59+00:00

The get_user_pages() helper can return fewer than the requested pages.
Error out in that case, and clean up the partial result.

Signed-off-by: Henry C Chang 
Signed-off-by: Sage Weil

ceph: mark user pages dirty on direct-io reads

2010-12-17T17:54:40+00:00

For read operation, we have to set the argument _write_ of get_user_pages
to 1 since we will write data to pages. Also, we need to SetPageDirty before
releasing these pages.

Signed-off-by: Henry C Chang 
Signed-off-by: Sage Weil

ceph: fix comment, remove extraneous args

2010-11-09T20:24:53+00:00

The offset/length arguments aren't used.

Signed-off-by: Sage Weil