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Alexander Aring 4798cbbfbd fs: dlm: rework receive handling 
This patch reworks the current receive handling of dlm. As I tried to
change the send handling to fix reorder issues I took a look into the
receive handling and simplified it, it works as the following:

Each connection has a preallocated receive buffer with a minimum length of
4096. On receive, the upper layer protocol will process all dlm message
until there is not enough data anymore. If there exists "leftover" data at
the end of the receive buffer because the dlm message wasn't fully received
it will be copied to the begin of the preallocated receive buffer. Next
receive more data will be appended to the previous "leftover" data and
processing will begin again.

This will remove a lot of code of the current mechanism. Inside the
processing functionality we will ensure with a memmove() that the dlm
message should be memory aligned. To have a dlm message always started
at the beginning of the buffer will reduce some amount of memmove()
calls because src and dest pointers are the same.

The cluster attribute "buffer_size" becomes a new meaning, it's now the
size of application layer receive buffer size. If this is changed during
runtime the receive buffer will be reallocated. It's important that the
receive buffer size has at minimum the size of the maximum possible dlm
message size otherwise the received message cannot be placed inside
the receive buffer size.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
 		2020-09-29 14:00:32 -05:00
..
9p 9p: Remove unneeded cast from memory allocation 2020-07-31 07:28:25 +02:00
adfs block: move struct block_device to blk_types.h 2020-06-24 09:16:02 -06:00
affs block: move block-related definitions out of fs.h 2020-06-24 09:16:02 -06:00
afs afs: Fix NULL deref in afs_dynroot_depopulate() 2020-08-21 10:56:40 -07:00
autofs fs: autofs: delete repeated words in comments 2020-08-14 19:56:56 -07:00
befs block: move struct block_device to blk_types.h 2020-06-24 09:16:02 -06:00
bfs docs: filesystems: fix renamed references 2020-04-20 15:45:22 -06:00
btrfs for-5.9-tag 2020-08-13 12:26:18 -07:00
cachefiles cachefiles: switch to kernel_write 2020-07-08 08:27:56 +02:00
ceph ceph: handle zero-length feature mask in session messages 2020-08-05 17:47:07 +02:00
cifs 3 small cifs/smb3 fixes, one for stable fixing mkdir path with idsfromsid mount option 2020-08-15 08:31:39 -07:00
coda docs: filesystems: convert coda.txt to ReST 2020-05-05 09:22:21 -06:00
configfs A fair amount of stuff this time around, dominated by yet another massive 2020-06-01 15:45:27 -07:00
cramfs docs: filesystems: fix renamed references 2020-04-20 15:45:22 -06:00
crypto mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00
debugfs Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2020-08-05 20:13:21 -07:00
devpts
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dlm fs: dlm: rework receive handling 2020-09-29 14:00:32 -05:00
ecryptfs mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00
efivarfs efi/efivars: Expose RT service availability via efivars abstraction 2020-07-09 10:14:29 +03:00
efs block: move struct block_device to blk_types.h 2020-06-24 09:16:02 -06:00
erofs Changes since last update: 2020-08-06 19:22:51 -07:00
exfat exfat: retain 'VolumeFlags' properly 2020-08-12 08:31:13 +09:00
exportfs
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ext2 ext2: ext2.h: fix duplicated word + typos 2020-07-27 10:58:06 +02:00
ext4 Improvements to ext4's block allocator performance for very large file 2020-08-21 11:03:38 -07:00
f2fs f2fs-for-5.9-rc1 2020-08-10 18:33:22 -07:00
fat fat: fix fat_ra_init() for data clusters == 0 2020-08-12 10:58:01 -07:00
freevxfs
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fscache Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2020-06-03 16:27:18 -07:00
fuse virtio: fixes, features 2020-08-11 14:34:17 -07:00
gfs2 Changes in gfs2: 2020-08-10 18:22:43 -07:00
hfs block: move block-related definitions out of fs.h 2020-06-24 09:16:02 -06:00
hfsplus treewide: Remove uninitialized_var() usage 2020-07-16 12:35:15 -07:00
hostfs hostfs: Use kasprintf() instead of fixed buffer formatting 2020-03-29 23:23:00 +02:00
hpfs hpfs: fix warning due to superfluous semicolon 2020-06-06 10:08:17 -07:00
hugetlbfs hugetlbfs: prevent filesystem stacking of hugetlbfs 2020-08-12 10:57:56 -07:00
iomap iomap: fall back to buffered writes for invalidation failures 2020-08-05 09:24:16 -07:00
isofs Remove uninitialized_var() macro for v5.9-rc1 2020-08-04 13:49:43 -07:00
jbd2 jbd2: clean up checksum verification in do_one_pass() 2020-08-19 12:04:35 -04:00
jffs2 This pull request contains changes for JFFS2, UBI and UBIFS 2020-08-10 18:20:04 -07:00
jfs block: move struct block_device to blk_types.h 2020-06-24 09:16:02 -06:00
kernfs fsnotify: pass dir and inode arguments to fsnotify() 2020-07-27 23:15:48 +02:00
lockd proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
minix fs/minix: remove expected error message in block_to_path() 2020-08-12 10:58:00 -07:00
nfs NFS client updates for Linux 5.9 2020-08-15 08:26:55 -07:00
nfs_common
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nfsd Highlights: 2020-08-09 13:58:04 -07:00
nilfs2 nilfs2: use a more common logging style 2020-08-12 10:58:01 -07:00
nls treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
notify fanotify: compare fsid when merging name event 2020-07-28 10:58:07 +02:00
ntfs ntfs: fix ntfs_test_inode and ntfs_init_locked_inode function type 2020-08-07 11:33:21 -07:00
ocfs2 Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 21:14:30 -07:00
omfs treewide: Remove uninitialized_var() usage 2020-07-16 12:35:15 -07:00
openpromfs
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orangefs orangefs: remove unnecessary assignment to variable ret 2020-08-04 15:01:58 -04:00
overlayfs Remove uninitialized_var() macro for v5.9-rc1 2020-08-04 13:49:43 -07:00
proc mm, oom: make the calculation of oom badness more accurate 2020-08-12 10:57:56 -07:00
pstore pstore: Fix linking when crypto API disabled 2020-07-06 19:42:31 -07:00
qnx4
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qnx6 fs: convert mpage_readpages to mpage_readahead 2020-06-02 10:59:07 -07:00
quota \n 2020-08-06 19:28:26 -07:00
ramfs fs_parse: fold fs_parameter_desc/fs_parameter_spec 2020-02-07 14:48:37 -05:00
reiserfs \n 2020-08-06 19:28:26 -07:00
romfs romfs: fix uninitialized memory leak in romfs_dev_read() 2020-08-21 09:52:53 -07:00
squashfs squashfs: avoid bio_alloc() failure with 1Mbyte blocks 2020-08-21 09:52:53 -07:00
sysfs RDMA 5.8 merge window pull request 2020-06-05 14:05:57 -07:00
sysv docs: filesystems: fix renamed references 2020-04-20 15:45:22 -06:00
tracefs
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ubifs This pull request contains changes for JFFS2, UBI and UBIFS 2020-08-10 18:20:04 -07:00
udf \n 2020-08-06 19:28:26 -07:00
ufs fs/ufs: avoid potential u32 multiplication overflow 2020-08-12 10:58:01 -07:00
unicode .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
vboxsf vboxsf: don't use the source name in the bdi name 2020-05-07 08:45:47 -06:00
verity fs-verity: use smp_load_acquire() for ->i_verity_info 2020-07-21 16:02:41 -07:00
xfs Fixes for 5.9-rc1: 2020-08-13 12:22:19 -07:00
zonefs zonefs: add zone-capacity support 2020-08-11 17:42:24 +09:00
Kconfig tmpfs: support 64-bit inums per-sb 2020-08-07 11:33:24 -07:00
Kconfig.binfmt treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile init: add an init_mount helper 2020-07-31 08:17:51 +02:00
aio.c mm: remove unnecessary wrapper function do_mmap_pgoff() 2020-08-07 11:33:27 -07:00
anon_inodes.c
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attr.c
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bad_inode.c fs: move the fiemap definitions out of fs.h 2020-06-03 23:16:55 -04:00
binfmt_aout.c exec: Rename flush_old_exec begin_new_exec 2020-05-07 16:55:47 -05:00
binfmt_elf.c kill elf_fpxregs_t 2020-07-27 14:29:23 -04:00
binfmt_elf_fdpic.c Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 13:29:39 -07:00
binfmt_em86.c Merge branch 'akpm' (patches from Andrew) 2020-06-04 19:18:29 -07:00
binfmt_flat.c Merge branch 'uaccess.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-06-10 16:02:54 -07:00
binfmt_misc.c Merge branch 'akpm' (patches from Andrew) 2020-06-04 19:18:29 -07:00
binfmt_script.c Merge branch 'akpm' (patches from Andrew) 2020-06-04 19:18:29 -07:00
block_dev.c for-5.9/io_uring-20200802 2020-08-03 13:01:22 -07:00
buffer.c Improvements to ext4's block allocator performance for very large file 2020-08-21 11:03:38 -07:00
char_dev.c vfs: allow unprivileged whiteout creation 2020-05-14 16:44:23 +02:00
compat.c
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compat_binfmt_elf.c Split the old READ_IMPLIES_EXEC workaround from executable PT_GNU_STACK 2020-06-05 13:45:21 -07:00
coredump.c coredump: add %f for executable filename 2020-08-12 10:58:01 -07:00
d_path.c
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dax.c dax: Fix incorrect argument passed to xas_set_err() 2020-07-30 18:14:33 -06:00
dcache.c vfs: Use sequence counter with associated spinlock 2020-07-29 16:14:27 +02:00
dcookies.c
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direct-io.c block: remove the bd_queue field from struct block_device 2020-07-01 08:08:20 -06:00
drop_caches.c sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
eventfd.c eventfd: convert to f_op->read_iter() 2020-05-06 22:33:43 -04:00
eventpoll.c do_epoll_ctl(): clean the failure exits up a bit 2020-08-22 18:25:52 -04:00
exec.c mm/gup: remove task_struct pointer for all gup code 2020-08-12 10:58:04 -07:00
fcntl.c fcntl: Distribute switch variables for initialization 2020-03-03 10:55:06 -05:00
fhandle.c
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file.c Merge branch 'hch.init_path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 09:40:34 -07:00
file_table.c Revert "fs: Do not check if there is a fsnotify watcher on pseudo inodes" 2020-06-29 09:40:55 -07:00
filesystems.c fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once() 2020-04-10 15:36:22 -07:00
fs-writeback.c A lot of bug fixes and cleanups for ext4, including: 2020-06-05 16:19:28 -07:00
fs_context.c vfs: don't parse "silent" option 2020-05-14 16:44:25 +02:00
fs_parser.c fs_parse: remove pr_notice() about each validation 2020-04-02 09:35:26 -07:00
fs_pin.c
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fs_struct.c vfs: Use sequence counter with associated spinlock 2020-07-29 16:14:27 +02:00
fs_types.c
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fsopen.c add prefix to fs_context->log 2020-02-07 14:48:35 -05:00
init.c init: add an init_dup helper 2020-08-04 21:02:38 -04:00
inode.c AFS Changes 2020-06-05 16:26:36 -07:00
internal.h Merge branch 'hch.init_path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 09:40:34 -07:00
io-wq.c io-wq: update hash bits 2020-07-25 09:47:44 -06:00
io-wq.h io_uring/io-wq: move RLIMIT_FSIZE to io-wq 2020-07-24 13:00:44 -06:00
io_uring.c io_uring: kill extra iovec=NULL in import_iovec() 2020-08-20 05:36:19 -06:00
ioctl.c fs: remove ksys_ioctl 2020-07-31 08:16:01 +02:00
libfs.c block: remove the error_sector argument to blkdev_issue_flush 2020-05-22 08:45:46 -06:00
locks.c Highlights: 2020-08-09 13:58:04 -07:00
mbcache.c
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mount.h proc/mounts: add cursor 2020-05-14 16:44:24 +02:00
mpage.c fs: convert mpage_readpages to mpage_readahead 2020-06-02 10:59:07 -07:00
namei.c exec: restore EACCES of S_ISDIR execve() 2020-08-14 19:56:56 -07:00
namespace.c Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 21:03:25 -07:00
no-block.c
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nsfs.c nsproxy: attach to namespaces via pidfds 2020-05-13 11:41:22 +02:00
open.c exec: move S_ISREG() check earlier 2020-08-12 10:58:01 -07:00
pipe.c Notifications over pipes + Keyring notifications 2020-06-13 09:56:21 -07:00
pnode.c propagate_one(): mnt_set_mountpoint() needs mount_lock 2020-04-27 10:37:14 -04:00
pnode.h
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posix_acl.c vfs: clean up posix_acl_permission() logic aroudn MAY_NOT_BLOCK 2020-06-08 11:04:19 -07:00
proc_namespace.c Merge branch 'proc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-06-04 13:54:34 -07:00
read_write.c initrd: switch initrd loading to struct file based APIs 2020-07-30 08:22:47 +02:00
readdir.c fs: remove ksys_getdents64 2020-07-31 08:16:00 +02:00
select.c pselect6() and friends: take handling the combined 6th/7th args into helper 2020-05-29 19:10:42 -04:00
seq_file.c fs/seq_file.c: seq_read: Update pr_info_ratelimited 2020-06-04 19:06:25 -07:00
signalfd.c fs/signalfd.c: fix inconsistent return codes for signalfd4 2020-08-12 10:58:01 -07:00
splice.c Notifications over pipes + Keyring notifications 2020-06-13 09:56:21 -07:00
stack.c
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stat.c New code for 5.8: 2020-06-02 19:45:12 -07:00
statfs.c
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super.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-06-10 16:09:11 -07:00
sync.c overlayfs update for 5.8 2020-06-09 15:40:50 -07:00
timerfd.c
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userfaultfd.c A set of locking fixes and updates: 2020-08-10 19:07:44 -07:00
utimes.c fs: expose utimes_common 2020-07-31 08:16:01 +02:00
xattr.c xattr: add a function to check if a namespace is supported 2020-07-13 17:27:03 -04:00