linux/net/ceph
David Howells 5da4d7b8e6 libceph: Partially revert changes to support MSG_SPLICE_PAGES
Fix the mishandling of MSG_DONTWAIT and also reinstates the per-page
checking of the source pages (which might have come from a DIO write by
userspace) by partially reverting the changes to support MSG_SPLICE_PAGES
and doing things a little differently.  In messenger_v1:

 (1) The ceph_tcp_sendpage() is resurrected and the callers reverted to use
     that.

 (2) The callers now pass MSG_MORE unconditionally.  Previously, they were
     passing in MSG_MORE|MSG_SENDPAGE_NOTLAST and then degrading that to
     just MSG_MORE on the last call to ->sendpage().

 (3) Make ceph_tcp_sendpage() a wrapper around sendmsg() rather than
     sendpage(), setting MSG_SPLICE_PAGES if sendpage_ok() returns true on
     the page.

In messenger_v2:

 (4) Bring back do_try_sendpage() and make the callers use that.

 (5) Make do_try_sendpage() use sendmsg() for both cases and set
     MSG_SPLICE_PAGES if sendpage_ok() is set.

Fixes: 40a8c17aa7 ("ceph: Use sendmsg(MSG_SPLICE_PAGES) rather than sendpage")
Fixes: fa094ccae1 ("ceph: Use sendmsg(MSG_SPLICE_PAGES) rather than sendpage()")
Reported-by: Ilya Dryomov <idryomov@gmail.com>
Link: https://lore.kernel.org/r/CAOi1vP9vjLfk3W+AJFeexC93jqPaPUn2dD_4NrzxwoZTbYfOnw@mail.gmail.com/
Link: https://lore.kernel.org/r/CAOi1vP_Bn918j24S94MuGyn+Gxk212btw7yWeDrRcW1U8pc_BA@mail.gmail.com/
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Xiubo Li <xiubli@redhat.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
Link: https://lore.kernel.org/r/3101881.1687801973@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/3111635.1687813501@warthog.procyon.org.uk/ # v2
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Link: https://lore.kernel.org/r/3199652.1687873788@warthog.procyon.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-27 09:32:40 -07:00
..
crush libceph: use swap() macro instead of taking tmp variable 2022-05-25 20:45:13 +02:00
armor.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
auth_none.c libceph: kill ceph_none_authorizer::reply_buf 2021-06-28 23:49:25 +02:00
auth_none.h libceph: kill ceph_none_authorizer::reply_buf 2021-06-28 23:49:25 +02:00
auth_x_protocol.h libceph: fix some spelling mistakes 2021-06-28 23:49:25 +02:00
auth_x.c libceph: set global_id as soon as we get an auth ticket 2021-06-24 21:03:17 +02:00
auth_x.h ceph: fix whitespace 2018-08-02 21:33:21 +02:00
auth.c libceph: remove unnecessary ret variable in ceph_auth_init() 2021-06-28 23:49:25 +02:00
buffer.c mm: allow !GFP_KERNEL allocations for kvmalloc 2022-01-15 16:30:29 +02:00
ceph_common.c libceph: optionally use bounce buffer on recv path in crc mode 2022-02-02 18:50:36 +01:00
ceph_hash.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ceph_strings.c libceph: introduce connection modes and ms_mode option 2020-12-14 23:21:50 +01:00
cls_lock_client.c libceph: fix doc warnings in cls_lock_client.c 2021-06-28 23:49:25 +02:00
crypto.c mm: allow !GFP_KERNEL allocations for kvmalloc 2022-01-15 16:30:29 +02:00
crypto.h libceph, ceph: incorporate nautilus cephx changes 2020-12-14 23:21:50 +01:00
debugfs.c libceph: dump class and method names on method calls 2020-08-03 11:03:01 +02:00
decode.c libceph: allow addrvecs with a single NONE/blank address 2021-05-04 16:06:15 +02:00
Kconfig libceph, ceph: implement msgr2.1 protocol (crc and secure modes) 2020-12-14 23:21:50 +01:00
Makefile libceph, ceph: implement msgr2.1 protocol (crc and secure modes) 2020-12-14 23:21:50 +01:00
messenger_v1.c libceph: Partially revert changes to support MSG_SPLICE_PAGES 2023-06-27 09:32:40 -07:00
messenger_v2.c libceph: Partially revert changes to support MSG_SPLICE_PAGES 2023-06-27 09:32:40 -07:00
messenger.c net/sock: Introduce trace_sk_data_ready() 2023-01-23 11:26:50 +00:00
mon_client.c treewide: use get_random_u32_below() instead of deprecated function 2022-11-18 02:15:15 +01:00
msgpool.c libceph: preallocate message data items 2018-10-22 10:28:22 +02:00
osd_client.c treewide: use get_random_u32_below() instead of deprecated function 2022-11-18 02:15:15 +01:00
osdmap.c libceph: print fsid and epoch with osd id 2022-08-03 00:54:12 +02:00
pagelist.c libceph: fix ceph_pagelist_reserve() comment typo 2022-08-03 00:54:13 +02:00
pagevec.c libceph: remove ceph_get_direct_page_vector() 2019-07-08 14:01:40 +02:00
snapshot.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 268 2019-06-05 17:30:29 +02:00
string_table.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
striper.c rbd: support for object-map and fast-diff 2019-07-08 14:01:45 +02:00