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Chuck Lever 15ce4a0c1c NFS: Replace atomic_t variables in nfs_direct_req with a single spin lock 
Three atomic_t variables cause a lot of bus locking.  Because they are all
used in the same places in the code, just use a single spin lock.

Now that the atomic_t variables are gone, we can remove the request size
limitation since the code no longer depends on the limited width of atomic_t
on some platforms.

Test plan:
Compile with CONFIG_NFS and CONFIG_NFS_DIRECTIO enabled.  Millions of fsx
operations, iozone, OraSim.

Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-03-20 13:44:34 -05:00
..
9p
[PATCH] v9fs: fix overzealous dropping of dentry which breaks dcache
2006-03-17 07:51:25 -08:00
adfs
[PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reason
2005-11-09 07:55:57 -08:00
affs
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
2006-01-09 15:59:24 -08:00
afs
add loglevel to printk in fs/afs/cmservice.c
2006-01-11 01:52:40 +01:00
autofs
[PATCH] capable/capability.h (fs/)
2006-01-11 18:42:13 -08:00
autofs4
[PATCH] autofs4 oops fix
2006-01-14 18:25:19 -08:00
befs
remove unused fs/befs/attribute.c
2005-11-08 16:54:53 +01:00
bfs
[PATCH] bfs iget() abuses
2005-10-04 13:22:01 -07:00
cifs
[CIFS] Always match oplock break (cache notification) to the right tcp
2006-03-05 03:39:55 +00:00
coda
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
2006-01-09 15:59:24 -08:00
configfs
[PATCH] BUG_ON() Conversion in fs/configfs/
2006-02-03 14:03:09 -08:00
cramfs
[PATCH] cramfs mounts provide corrupted content since 2.6.15
2006-03-06 18:40:43 -08:00
debugfs
[PATCH] debugfs: trivial comment fix
2006-02-06 12:17:18 -08:00
devfs
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
2006-01-09 15:59:24 -08:00
devpts
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
2006-01-09 15:59:24 -08:00
efs
return statement cleanup - kill pointless parentheses
2006-01-15 02:37:08 +01:00
exportfs
[PATCH] exportfs: add find_acceptable_alias helper
2006-01-18 19:20:28 -08:00
ext2
[PATCH] Fix ext2 readdir f_pos re-validation logic
2006-03-15 16:31:51 -08:00
ext3
[PATCH] ext3: fix nobh mode for chattr +j inodes
2006-03-11 09:19:34 -08:00
fat
[PATCH] fat: Fix truncate() write ordering
2006-02-03 08:32:10 -08:00
freevxfs
[PATCH] fix possible PAGE_CACHE_SHIFT overflows
2006-01-08 20:13:54 -08:00
fuse
[PATCH] fuse: fix bug in negative lookup
2006-02-28 20:53:43 -08:00
hfs
[PATCH] hfs: cleanup HFS prints
2006-01-18 19:20:23 -08:00
hfsplus
[PATCH] hfs: set type/creator for symlinks
2006-01-18 19:20:23 -08:00
hostfs
[PATCH] uml: hostfs - fix possible PAGE_CACHE_SHIFT overflows
2005-12-29 09:48:15 -08:00
hpfs
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
2006-01-09 15:59:24 -08:00
hppfs
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
2006-01-09 15:59:24 -08:00
hugetlbfs
[PATCH] mm: hugepage accounting fix
2006-02-01 08:53:15 -08:00
isofs
[PATCH] isofs: remove d_splice_alias NULL check from isofs_lookup
2006-01-14 18:27:12 -08:00
jbd
[PATCH] jbd: revert checkpoint list changes
2006-02-14 16:09:34 -08:00
jffs
[PATCH] fs/jffs/intrep.c: 255 is unsigned char
2006-02-03 08:32:05 -08:00
jffs2
[PATCH] mtd: 64 bit fixes
2006-03-09 19:47:37 -08:00
jfs
[PATCH] JFS: Take logsync lock before testing mp->lsn
2006-03-14 14:00:48 -08:00
lockd
lockd: Remove FL_LOCKD flag
2006-03-20 13:44:26 -05:00
minix
[PATCH] update filesystems for new delete_inode behavior
2005-09-09 13:57:27 -07:00
msdos
[PATCH] fat: remove the unneeded vfat_find() in vfat_rename()
2005-10-30 17:37:32 -08:00
ncpfs
[PATCH] ncpfs: remove kmalloc wrapper
2006-01-14 18:27:12 -08:00
nfs
NFS: Replace atomic_t variables in nfs_direct_req with a single spin lock
2006-03-20 13:44:34 -05:00
nfs_common
[PATCH] nfsacl: Solaris VxFS compatibility fix
2005-10-11 09:46:54 -07:00
nfsd
locks,lockd: fix race in nlmsvc_testlock
2006-03-20 13:44:26 -05:00
nls
[PATCH] make some things static
2005-05-05 16:36:47 -07:00
ntfs
NTFS: Do more detailed reporting of why we cannot mount read-write by
2006-02-24 10:48:14 +00:00
ocfs2
[PATCH] ocfs2: use hlists for lockres hash
2006-03-01 12:18:16 -08:00
openpromfs
[PATCH] kfree cleanup: fs
2005-11-07 07:54:06 -08:00
partitions
[PATCH] s390: dasd partition detection
2006-03-08 14:14:01 -08:00
proc
VFS: New /proc file /proc/self/mountstats
2006-03-20 13:44:12 -05:00
qnx4
fs/qnx4/bitmap.c: #if 0 qnx4_new_block()
2006-01-03 13:21:37 +01:00
ramfs
[PATCH] ramfs needs to update directory m/ctime on symlink
2006-03-06 18:40:45 -08:00
reiserfs
[PATCH] reiserfs: fix unaligned bitmap usage
2006-03-02 10:37:59 -08:00
relayfs
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
2006-01-09 15:59:24 -08:00
romfs
[PATCH] fix possible PAGE_CACHE_SHIFT overflows
2006-01-08 20:13:54 -08:00
smbfs
[PATCH] smbfs readdir vs signal fix
2006-02-01 08:53:09 -08:00
sysfs
[PATCH] capable/capability.h (fs/)
2006-01-11 18:42:13 -08:00
sysv
correct email address of Manfred Spraul
2006-01-15 02:43:54 +01:00
udf
[PATCH] udf: fix uid/gid options and add uid/gid=ignore and forget options
2006-03-08 14:14:00 -08:00
ufs
[PATCH] ufs: fix hang during `rm'
2006-02-03 08:32:04 -08:00
vfat
[PATCH] fat: remove the unneeded vfat_find() in vfat_rename()
2005-10-30 17:37:32 -08:00
xfs
[XFS] Don't map non-uptodate buffers in xfs_probe_cluster; also fixes
2006-02-28 12:30:30 +11:00
aio.c
[PATCH] rcu file: use atomic primitives
2006-01-08 20:13:48 -08:00
attr.c
[PATCH] capable/capability.h (fs/)
2006-01-11 18:42:13 -08:00
bad_inode.c
[PATCH] make some things static
2005-05-05 16:36:47 -07:00
binfmt_aout.c
[PATCH] dump_thread() cleanup
2006-01-10 08:01:25 -08:00
binfmt_elf_fdpic.c
[PATCH] fs/binfmt_elf: Remove unneeded kmalloc() return value casts
2006-01-10 08:02:01 -08:00
binfmt_elf.c
[PATCH] x86_64: Check for bad elf entry address.
2006-02-26 09:53:30 -08:00
binfmt_em86.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
binfmt_flat.c
[PATCH] uclinux: delay binfmt_flat trace
2006-01-10 09:31:27 -08:00
binfmt_misc.c
[PATCH] Unlinline a bunch of other functions
2006-01-14 18:27:06 -08:00
binfmt_script.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
binfmt_som.c
[PATCH] mm: mm_init set_mm_counters
2005-10-29 21:40:38 -07:00
bio.c
[BLOCK] A few kerneldoc fixups
2006-01-31 15:24:34 +01:00
block_dev.c
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
2006-01-09 15:59:24 -08:00
buffer.c
[PATCH] page migration: fail if page is in a vma flagged VM_LOCKED
2006-03-14 21:43:02 -08:00
char_dev.c
[PATCH] convert /proc/devices to use seq_file interface
2006-01-14 18:25:19 -08:00
compat_ioctl.c
[NET] compat ifconf: fix limits
2006-03-08 16:46:08 -08:00
compat.c
[PATCH] select: time comparison fixes
2006-02-17 13:59:28 -08:00
dcache.c
[PATCH] fix file counting
2006-03-08 14:14:01 -08:00
dcookies.c
[PATCH] capable/capability.h (fs/)
2006-01-11 18:42:13 -08:00
direct-io.c
Fix a direct I/O locking issue revealed by the new mutex code.
2006-03-15 15:14:45 +11:00
dnotify.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
dquot.c
[PATCH] capable/capability.h (fs/)
2006-01-11 18:42:13 -08:00
drop_caches.c
[PATCH] drop-pagecache
2006-01-08 20:12:40 -08:00
eventpoll.c
[PATCH] epoll: handle timeout overflow
2005-09-28 07:46:41 -07:00
exec.c
[PATCH] Add mm->task_size and fix powerpc vdso
2006-02-28 20:53:44 -08:00
fcntl.c
[PATCH] fcntl F_SETFL and read-only IS_APPEND files
2006-02-03 08:32:07 -08:00
fifo.c
Simplify fifo_open() locking logic
2006-03-07 09:16:35 -08:00
file_table.c
[PATCH] fix file counting
2006-03-08 14:14:01 -08:00
file.c
[PATCH] percpu data: only iterate over possible CPUs
2006-02-05 11:06:51 -08:00
filesystems.c
[PATCH] fix missing includes
2005-10-30 17:37:32 -08:00
fs-writeback.c
[PATCH] kernel-docs: fix kernel-doc format problems
2005-11-07 07:53:55 -08:00
inode.c
[PATCH] DocBook: fix some kernel-doc comments in fs and block
2006-02-01 08:53:27 -08:00
inotify.c
[PATCH] inotify: fix one-shot support
2006-02-07 16:12:33 -08:00
ioctl.c
[PATCH] capable/capability.h (fs/)
2006-01-11 18:42:13 -08:00
ioprio.c
[PATCH] capable/capability.h (fs/)
2006-01-11 18:42:13 -08:00
Kconfig
o Remove confusing Kconfig text for CONFIGFS_FS.
2006-02-03 13:47:17 -08:00
Kconfig.binfmt
[PATCH] frv: suppress configuration of certain features for FRV
2006-01-08 20:13:36 -08:00
libfs.c
[PATCH] debugfs: hard link count wrong
2006-02-03 08:32:11 -08:00
locks.c
locks,lockd: fix race in nlmsvc_testlock
2006-03-20 13:44:26 -05:00
Makefile
[PATCH] sanitize building of fs/compat_ioctl.c
2006-01-10 08:01:33 -08:00
mbcache.c
[PATCH] Unlinline a bunch of other functions
2006-01-14 18:27:06 -08:00
mpage.c
[PATCH] fix possible PAGE_CACHE_SHIFT overflows
2006-01-08 20:13:54 -08:00
namei.c
[PATCH] ext3: ext3_symlink should use GFP_NOFS allocations inside
2006-03-11 09:19:34 -08:00
namespace.c
VFS: New /proc file /proc/self/mountstats
2006-03-20 13:44:12 -05:00
nfsctl.c
[PATCH] nfsservctl(): remove user-triggerable printk
2006-03-17 07:51:25 -08:00
open.c
[PATCH] vfs: *at functions: core
2006-01-18 19:20:29 -08:00
pipe.c
Mark the pipe file operations static
2006-03-08 14:03:09 -08:00
pnode.c
[PATCH] shared mounts: cleanup
2006-01-08 20:13:56 -08:00
pnode.h
[PATCH] unbindable mounts
2005-11-07 18:18:11 -08:00
posix_acl.c
[PATCH] gfp flags annotations - part 1
2005-10-08 15:00:57 -07:00
quota_v1.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
quota_v2.c
[PATCH] quota_v2: printk warning fixes
2006-02-03 08:32:03 -08:00
quota.c
[PATCH] capable/capability.h (fs/)
2006-01-11 18:42:13 -08:00
read_write.c
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
2006-01-09 15:59:24 -08:00
readdir.c
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
2006-01-09 15:59:24 -08:00
select.c
[PATCH] select: time comparison fixes
2006-02-17 13:59:28 -08:00
seq_file.c
[PATCH] allow callers of seq_open do allocation themselves
2005-11-07 18:18:09 -08:00
stat.c
[PATCH] fstatat64 support
2006-02-11 21:41:10 -08:00
super.c
Revert mount/umount uevent removal
2006-02-22 09:39:02 -08:00
xattr_acl.c
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
xattr.c
[PATCH] move xattr permission checks into the VFS
2006-01-10 08:01:29 -08:00