Alexander Aring 1696c75f18 fs: dlm: add send ack threshold and append acks to msgs ... This patch changes the time when we sending an ack back to tell the other side it can free some message because it is arrived on the receiver node, due random reconnects e.g. TCP resets this is handled as well on application layer to not let DLM run into a deadlock state. The current handling has the following problems: 1. We end in situations that we only send an ack back message of 16 bytes out and no other messages. Whereas DLM has logic to combine so much messages as it can in one send() socket call. This behaviour can be discovered by "trace-cmd start -e dlm_recv" and observing the ret field being 16 bytes. 2. When processing of DLM messages will never end because we receive a lot of messages, we will not send an ack back as it happens when the processing loop ends. This patch introduces a likely and unlikely threshold case. The likely case will send an ack back on a transmit path if the threshold is triggered of amount of processed upper layer protocol. This will solve issue 1 because it will be send when another normal DLM message will be sent. It solves issue 2 because it is not part of the processing loop. There is however a unlikely case, the unlikely case has a bigger threshold and will be triggered when we only receive messages and do not sent any message back. This case avoids that the sending node will keep a lot of message for a long time as we send sometimes ack backs to tell the sender to finally release messages. The atomic cmpxchg() is there to provide a atomically ack send with reset of the upper layer protocol delivery counter. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com>		2023-06-14 10:17:33 -05:00
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9p
adfs
affs
afs
autofs
befs
bfs
btrfs
cachefiles
ceph	ceph: force updating the msg pointer in non-split case	2023-05-18 11:15:28 +02:00
cifs	SMB3: drop reference to cfile before sending oplock break	2023-05-17 12:04:41 -05:00
coda
configfs
cramfs
crypto
debugfs
devpts
dlm	fs: dlm: add send ack threshold and append acks to msgs	2023-06-14 10:17:33 -05:00
ecryptfs
efivarfs
efs
erofs
exfat
exportfs
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f2fs
fat
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jbd2
jffs2
jfs
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ksmbd	ksmbd: smb2: Allow messages padded to 8byte boundary	2023-05-16 10:26:14 -05:00
lockd	nfsd-6.4 fixes:	2023-05-17 09:56:01 -07:00
minix
netfs
nfs
nfs_common
nfsd	nfsd-6.4 fixes:	2023-05-17 09:56:01 -07:00
nilfs2	nilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode()	2023-05-17 15:24:34 -07:00
nls
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ntfs3
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bad_inode.c
binfmt_elf_fdpic.c
binfmt_elf_test.c
binfmt_elf.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
buffer.c
char_dev.c
compat_binfmt_elf.c
coredump.c
d_path.c
dax.c
dcache.c
direct-io.c
drop_caches.c
eventfd.c
eventpoll.c
exec.c
fcntl.c
fhandle.c
file_table.c
file.c
filesystems.c
fs_context.c
fs_parser.c
fs_pin.c
fs_struct.c
fs_types.c
fs-writeback.c
fsopen.c
init.c
inode.c
internal.h
ioctl.c
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kernel_read_file.c
libfs.c
locks.c
Makefile
mbcache.c
mnt_idmapping.c
mount.h
mpage.c
namei.c
namespace.c
no-block.c
nsfs.c
open.c
pipe.c
pnode.c
pnode.h
posix_acl.c
proc_namespace.c
read_write.c
readdir.c
remap_range.c
select.c
seq_file.c
signalfd.c
splice.c
stack.c
stat.c
statfs.c	statfs: enforce statfs[64] structure initialization	2023-05-17 15:20:17 +02:00
super.c
sync.c
sysctls.c
timerfd.c
userfaultfd.c
utimes.c
xattr.c