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3c1105df69
linux/fs
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Jeff Layton 3c1105df69 cifs: don't call mid_q_entry->callback under the Global_MidLock (try #5) 
Minor revision to the last version of this patch -- the only difference
is the fix to the cFYI statement in cifs_reconnect.

Holding the spinlock while we call this function means that it can't
sleep, which really limits what it can do. Taking it out from under
the spinlock also means less contention for this global lock.

Change the semantics such that the Global_MidLock is not held when
the callback is called. To do this requires that we take extra care
not to have sync_mid_result remove the mid from the list when the
mid is in a state where that has already happened. This prevents
list corruption when the mid is sitting on a private list for
reconnect or when cifsd is coming down.

Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-05-24 03:11:33 +00:00
..
9p fs/9p: Fix error reported by coccicheck 2011-04-15 15:26:14 -05:00
adfs Fix common misspellings 2011-03-31 11:26:23 -03:00
affs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
afs Fix common misspellings 2011-03-31 11:26:23 -03:00
autofs4 Fix common misspellings 2011-03-31 11:26:23 -03:00
befs Fix common misspellings 2011-03-31 11:26:23 -03:00
bfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
btrfs sanitize <linux/prefetch.h> usage 2011-05-20 12:50:29 -07:00
cachefiles Fix common misspellings 2011-03-31 11:26:23 -03:00
ceph ceph: do not use i_wrbuffer_ref as refcount for Fb cap 2011-05-11 10:44:48 -07:00
cifs cifs: don't call mid_q_entry->callback under the Global_MidLock (try #5) 2011-05-24 03:11:33 +00:00
coda codafs: fix build break when CONFIG_PROC_SYSCTL=n 2011-03-25 17:45:16 -07:00
configfs configfs: Fix race between configfs_readdir() and configfs_d_iput() 2011-05-18 04:08:16 -07:00
cramfs cramfs: generate unique inode number for better inode cache usage 2011-01-13 08:03:23 -08:00
debugfs debugfs: move to new strtobool 2011-05-19 16:55:28 +09:30
devpts fs/devpts/inode.c: correctly check d_alloc_name() return code in devpts_pty_new() 2011-03-22 17:44:17 -07:00
dlm Fix common misspellings 2011-03-31 11:26:23 -03:00
ecryptfs eCryptfs: Flush dirty pages in setattr 2011-04-25 18:49:46 -05:00
efs block: remove per-queue plugging 2011-03-10 08:52:07 +01:00
exofs Fix common misspellings 2011-03-31 11:26:23 -03:00
exportfs vfs: Add open by file handle support 2011-03-15 02:21:44 -04:00
ext2 Fix common misspellings 2011-03-31 11:26:23 -03:00
ext3 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 2011-04-08 07:35:17 -07:00
ext4 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2011-04-11 15:45:47 -07:00
fat Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
freevxfs Fix common misspellings 2011-03-31 11:26:23 -03:00
fscache FS-Cache: Fix operation handling 2011-01-14 09:23:36 -08:00
fuse fuse: fix oops in revalidate when called with NULL nameidata 2011-05-10 17:35:58 +02:00
gfs2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw 2011-05-20 13:28:45 -07:00
hfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
hfsplus Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
hostfs switch hostfs 2011-01-12 20:03:42 -05:00
hpfs HPFS: Remove unused variable 2011-05-09 09:04:24 -07:00
hppfs fs: icache RCU free inodes 2011-01-07 17:50:26 +11:00
hugetlbfs mm: hugetlbfs: change remove_from_page_cache 2011-03-22 17:44:02 -07:00
isofs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
jbd Fix common misspellings 2011-03-31 11:26:23 -03:00
jbd2 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2011-04-11 15:45:47 -07:00
jffs2 Fix common misspellings 2011-03-31 11:26:23 -03:00
jfs Fix common misspellings 2011-03-31 11:26:23 -03:00
lockd NLM: Fix "kernel BUG at fs/lockd/host.c:417!" or ".../host.c:283!" 2011-01-25 15:24:47 -05:00
logfs sanitize <linux/prefetch.h> usage 2011-05-20 12:50:29 -07:00
minix Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
ncpfs Fix common misspellings 2011-03-31 11:26:23 -03:00
nfs NFSv4.1: Ensure that layoutget uses the correct gfp modes 2011-05-11 22:52:13 -04:00
nfs_common Fix common misspellings 2011-03-31 11:26:23 -03:00
nfsd Open with O_CREAT flag set fails to open existing files on non writable directories 2011-04-20 11:03:01 -04:00
nilfs2 nilfs2: fix infinite loop in nilfs_palloc_freev function 2011-05-10 22:19:50 +09:00
nls
notify Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
ntfs Fix common misspellings 2011-03-31 11:26:23 -03:00
ocfs2 ocfs2/dlm: Target node death during resource migration leads to thread spin 2011-05-13 11:27:30 -07:00
omfs Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
openpromfs fs: icache RCU free inodes 2011-01-07 17:50:26 +11:00
partitions Fix for buffer overflow in ldm_frag_add not sufficient 2011-05-20 16:40:36 -07:00
proc Don't lock guardpage if the stack is growing up 2011-05-09 16:22:07 -07:00
pstore pstore: fix pstore filesystem mount/remount issue 2011-05-16 11:05:00 -07:00
qnx4 block: remove per-queue plugging 2011-03-10 08:52:07 +01:00
quota Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 2011-04-08 07:35:17 -07:00
ramfs ramfs: fix memleak on no-mmu arch 2011-04-14 16:06:56 -07:00
reiserfs Fix common misspellings 2011-03-31 11:26:23 -03:00
romfs fs: icache RCU free inodes 2011-01-07 17:50:26 +11:00
squashfs Fix common misspellings 2011-03-31 11:26:23 -03:00
sysfs sysfs: remove "last sysfs file:" line from the oops messages 2011-05-13 16:05:51 -07:00
sysv Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
ubifs UBIFS: seek journal heads to the latest bud in replay 2011-05-02 19:23:48 +03:00
udf Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
ufs Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
xfs xfs: fix race condition in AIL push trigger 2011-05-09 18:35:04 -05:00
aio.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
anon_inodes.c sanitize vfsmount refcounting changes 2011-01-16 13:47:07 -05:00
attr.c Fix common misspellings 2011-03-31 11:26:23 -03:00
bad_inode.c fs: provide rcu-walk aware permission i_ops 2011-01-07 17:50:29 +11:00
binfmt_aout.c
binfmt_elf_fdpic.c
binfmt_elf.c brk: COMPAT_BRK: fix detection of randomized brk 2011-04-14 16:06:55 -07:00
binfmt_em86.c
binfmt_flat.c Fix common misspellings 2011-03-31 11:26:23 -03:00
binfmt_misc.c
binfmt_script.c
binfmt_som.c
bio-integrity.c block: Require subsystems to explicitly allocate bio_set integrity mempool 2011-03-17 11:11:05 +01:00
bio.c Fix common misspellings 2011-03-31 11:26:23 -03:00
block_dev.c block: rescan partitions on invalidated devices on -ENOMEDIA too 2011-04-29 10:17:26 +02:00
buffer.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-03-24 19:01:30 -07:00
char_dev.c Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
compat_binfmt_elf.c
compat_ioctl.c Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6 2011-01-07 14:39:20 -08:00
compat.c select: remove unused MAX_SELECT_SECONDS 2011-03-21 00:16:08 -04:00
dcache.c sanitize <linux/prefetch.h> usage 2011-05-20 12:50:29 -07:00
dcookies.c
direct-io.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
drop_caches.c fs: move i_sb_list out from under inode_lock 2011-03-24 21:16:32 -04:00
eventfd.c Docbook: add fs/eventfd.c and fix typos in it 2011-02-21 15:07:04 -08:00
eventpoll.c Fix common misspellings 2011-03-31 11:26:23 -03:00
exec.c signal: Use GROUP_STOP_PENDING to stop once for a single group stop 2011-03-23 10:37:00 +01:00
fcntl.c userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
fhandle.c fs/fhandle.c: add <linux/personality.h> for ia64 2011-04-14 16:06:56 -07:00
fifo.c Filesystem: fifo: Fixed coding style issue. 2011-03-21 00:16:09 -04:00
file_table.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2011-03-16 13:26:17 -07:00
file.c vfs: avoid large kmalloc()s for the fdtable 2011-04-28 11:28:20 -07:00
filesystems.c fs: synchronize_rcu when unregister_filesystem success not failure 2011-04-17 10:42:01 -07:00
fs_struct.c sanitize vfsmount refcounting changes 2011-01-16 13:47:07 -05:00
fs-writeback.c Fix common misspellings 2011-03-31 11:26:23 -03:00
generic_acl.c userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
inode.c fs: add missing prefetch.h include 2011-05-22 11:26:02 -07:00
internal.h fs: move i_wb_list out from under inode_lock 2011-03-24 21:17:51 -04:00
ioctl.c vfs: cleanup do_vfs_ioctl() 2011-03-21 00:16:08 -04:00
ioprio.c ioprio: grab rcu_read_lock in sys_ioprio_{set,get}() 2010-11-15 10:23:31 +01:00
Kconfig Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2011-03-16 19:01:29 -07:00
Kconfig.binfmt
libfs.c pass default dentry_operations to mount_pseudo() 2011-01-12 20:03:43 -05:00
locks.c Merge branch 'for-2.6.39' of git://linux-nfs.org/~bfields/linux 2011-03-24 08:20:39 -07:00
Makefile Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2011-03-16 19:01:29 -07:00
mbcache.c Fix common misspellings 2011-03-31 11:26:23 -03:00
mpage.c fs: make mpage read/write_pages() plug 2011-03-10 08:52:26 +01:00
namei.c VFS: move BUG_ON test for symlink nd->depth after current->link_count test 2011-05-21 00:12:16 -07:00
namespace.c Revert "vfs: Export file system uuid via /proc/<pid>/mountinfo" 2011-04-12 13:35:56 -07:00
nfsctl.c open-style analog of vfs_path_lookup() 2011-03-14 09:15:28 -04:00
no-block.c
open.c fs: Use BUG_ON(!mnt) at dentry_open(). 2011-03-21 01:10:41 -04:00
pipe.c Fix broken "pipe: use event aware wakeups" optimization 2011-01-20 16:21:59 -08:00
pnode.c fs: scale mntget/mntput 2011-01-07 17:50:33 +11:00
pnode.h
posix_acl.c NFS: Prevent memory allocation failure in nfsacl_encode() 2011-01-25 15:24:47 -05:00
read_write.c fix signedness mess in rw_verify_area() on 64bit architectures 2011-01-12 20:06:58 -05:00
read_write.h
readdir.c
select.c select: remove unused MAX_SELECT_SECONDS 2011-03-21 00:16:08 -04:00
seq_file.c
signalfd.c
splice.c Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block 2011-01-13 10:45:01 -08:00
stack.c
stat.c readlinkat(), fchownat() and fstatat() with empty relative pathnames 2011-03-15 02:21:45 -04:00
statfs.c clean statfs-like syscalls up 2011-03-14 09:15:28 -04:00
super.c VFS: trivial: fix comment on s_maxbytes value warning check 2011-05-19 14:10:49 +00:00
sync.c Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
timerfd.c
utimes.c userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-23 19:47:13 -07:00
xattr_acl.c
xattr.c vfs: Pass setxattr(2) flags properly 2011-04-21 07:34:44 -07:00