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OpenCloudOS-Kernel/fs/cifs
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NeilBrown 4b60c0ff2f mm: move responsibility for setting SWP_FS_OPS to ->swap_activate 
If a filesystem wishes to handle all swap IO itself (via ->direct_IO and
->readpage), rather than just providing devices addresses for
submit_bio(), SWP_FS_OPS must be set.

Currently the protocol for setting this it to have ->swap_activate return
zero.  In that case SWP_FS_OPS is set, and add_swap_extent() is called for
the entire file.

This is a little clumsy as different return values for ->swap_activate
have quite different meanings, and it makes it hard to search for which
filesystems require SWP_FS_OPS to be set.

So remove the special meaning of a zero return, and require the filesystem
to set SWP_FS_OPS if it so desires, and to always call add_swap_extent()
as required.

Currently only NFS and CIFS return zero for add_swap_extent().

Link: https://lkml.kernel.org/r/164859778123.29473.17908205846599043598.stgit@noble.brown
Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: David Howells <dhowells@redhat.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 		2022-05-09 18:20:48 -07:00
..
Kconfig cifs: Support fscache indexing rewrite 2022-01-19 11:21:08 -06:00
Makefile cifs: Support fscache indexing rewrite 2022-01-19 11:21:08 -06:00
asn1.c cifs: decoding negTokenInit with generic ASN1 decoder 2021-06-20 21:28:17 -05:00
cifs_debug.c smb3: cleanup and clarify status of tree connections 2022-03-28 17:07:30 -05:00
cifs_debug.h cifs: use SPDX-Licence-Identifier 2021-06-20 21:28:17 -05:00
cifs_dfs_ref.c cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
cifs_fs_sb.h cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
cifs_ioctl.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifs_spnego.c cifs: use the chans_need_reconnect bitmap for reconnect status 2022-01-02 20:38:46 -06:00
cifs_spnego.h cifs: use the chans_need_reconnect bitmap for reconnect status 2022-01-02 20:38:46 -06:00
cifs_spnego_negtokeninit.asn1 cifs: decoding negTokenInit with generic ASN1 decoder 2021-06-20 21:28:17 -05:00
cifs_swn.c cifs: use a different reconnect helper for non-cifsd threads 2022-03-18 23:12:03 -05:00
cifs_swn.h cifs: simplify SWN code with dummy funcs instead of ifdefs 2021-04-25 16:28:22 -05:00
cifs_unicode.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifs_unicode.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifs_uniupr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifsacl.c cifs: modefromsids must add an ACE for authenticated users 2022-02-14 09:55:51 -06:00
cifsacl.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifsencrypt.c cifs: take cifs_tcp_ses_lock for status checks 2022-01-07 20:07:07 -06:00
cifsfs.c cifs: verify that tcon is valid before dereference in cifs_kill_sb 2022-04-14 00:07:36 -05:00
cifsfs.h cifs: update internal module number 2022-04-04 22:40:14 -05:00
cifsglob.h 14 fixes to cifs client and to smbfs_common code 2022-04-01 14:31:57 -07:00
cifspdu.h smb3: move defines for query info and query fsinfo to smbfs_common 2022-03-26 23:09:51 -05:00
cifsproto.h cifs: use a different reconnect helper for non-cifsd threads 2022-03-18 23:12:03 -05:00
cifsroot.c cifs: Standardize logging output 2020-06-01 00:10:18 -05:00
cifssmb.c 14 fixes to cifs client and to smbfs_common code 2022-04-01 14:31:57 -07:00
connect.c cifs: use correct lock type in cifs_reconnect() 2022-04-20 22:54:39 -05:00
dfs_cache.c cifs: fix NULL ptr dereference in refresh_mounts() 2022-04-20 22:54:17 -05:00
dfs_cache.h cifs: support share failover when remounting 2021-07-22 11:43:23 -05:00
dir.c cifs: Support fscache indexing rewrite 2022-01-19 11:21:08 -06:00
dns_resolve.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
dns_resolve.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
export.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
file.c mm: move responsibility for setting SWP_FS_OPS to ->swap_activate 2022-05-09 18:20:48 -07:00
fs_context.c smb3: fix snapshot mount option 2022-02-13 14:56:16 -06:00
fs_context.h cifs: send workstation name during ntlmssp session setup 2021-11-08 13:07:56 -06:00
fscache.c netfs: Add a netfs inode context 2022-03-18 09:29:05 +00:00
fscache.h netfs: Add a netfs inode context 2022-03-18 09:29:05 +00:00
inode.c fs: Remove ->readpages address space operation 2022-04-01 13:45:33 -04:00
ioctl.c cifs: fix incorrect kernel doc comments 2021-09-13 18:29:46 -05:00
link.c cifs: potential buffer overflow in handling symlinks 2022-04-13 12:00:49 -05:00
misc.c smb3: cleanup and clarify status of tree connections 2022-03-28 17:07:30 -05:00
netlink.c cifs: Constify static struct genl_ops 2021-06-20 21:28:16 -05:00
netlink.h cifs: Register generic netlink family 2020-12-14 09:16:22 -06:00
netmisc.c cifs: fix potential race with cifsd thread 2022-04-04 12:01:22 -05:00
nterr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
nterr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
ntlmssp.h treewide: Replace zero-length arrays with flexible-array members 2022-02-17 07:00:39 -06:00
readdir.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
rfc1002pdu.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
sess.c cifs: fix confusing unneeded warning message on smb2.1 and earlier 2022-02-16 17:16:49 -06:00
smb1ops.c cifs: use a different reconnect helper for non-cifsd threads 2022-03-18 23:12:03 -05:00
smb2file.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
smb2glob.h smb3: move defines for ioctl protocol header and SMB2 sizes to smbfs_common 2022-03-26 23:09:20 -05:00
smb2inode.c cifs: for compound requests, use open handle if possible 2021-11-10 11:05:20 -06:00
smb2maperror.c cifs: Create a new shared file holding smb2 pdu definitions 2021-11-05 09:50:57 -05:00
smb2misc.c cifs: remove check of list iterator against head past the loop body 2022-04-04 12:01:22 -05:00
smb2ops.c cifs: destage any unwritten data to the server before calling copychunk_write 2022-04-20 22:54:54 -05:00
smb2pdu.c smb3: cleanup and clarify status of tree connections 2022-03-28 17:07:30 -05:00
smb2pdu.h smb3: fix ksmbd bigendian bug in oplock break, and move its struct to smbfs_common 2022-03-31 09:38:53 -05:00
smb2proto.h cifs: convert the path to utf16 in smb2_query_info_compound 2022-03-23 15:17:22 -05:00
smb2status.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
smb2transport.c cifs: protect all accesses to chan_* with chan_lock 2022-01-19 11:10:54 -06:00
smbdirect.c smbdirect: missing rc checks while waiting for rdma events 2021-06-22 12:08:32 -05:00
smbdirect.h cifs: smbd: Do not schedule work to send immediate packet on every receive 2020-04-07 12:41:16 -05:00
smbencrypt.c cifs: rename cifs_common to smbfs_common 2021-09-08 23:59:26 -05:00
smberr.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
trace.c smb3: Cleanup license mess 2019-01-24 09:37:33 -06:00
trace.h cifs: Split the smb3_add_credits tracepoint 2022-04-08 21:25:38 -05:00
transport.c cifs: Use kzalloc instead of kmalloc/memset 2022-04-18 10:22:57 -05:00
unc.c cifs: don't cargo-cult strndup() 2021-04-25 16:28:23 -05:00
winucase.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
xattr.c cifs: fix set of group SID via NTSD xattrs 2022-02-13 14:56:34 -06:00