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a13cbe3753
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Josef Whiter a13cbe3753 [GFS2] fix hangup when multiple processes are trying to write to the same file 
This fixes a problem I encountered while running bonnie++.  When you have one
thread that opens a file and starts to write to it, and then another thread that
tries to open and write to the same file, the second thread will loop forever
trying to grab the inode lock for that inode.  Basically we come in through
generic_buffered_file_write, which calls gfs2_prepare_write, which then attempts
to grab the glock.  Because we don't own the lock, gfs2_prepare_write gets
GLR_TRYFAILED, which returns AOP_TRUNCATED_PAGE to generic_buffered_file_write.
At this point generic_buffered_file_write loops around again and immediately
retries the prepare_write.  This means that the second process never gets off of
the processor in order to allow the process that holds the lock to finish its
work and let go of the lock.  This patch makes gfs2_glock_nq schedule() if it
gets back a GLR_TRYFAILED, which resolves this problem.

Signed-off-by: Josef Whiter <jwhiter@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2007-03-07 13:58:02 -05:00
..
9p 9p: implement optional loose read cache 2007-02-18 10:16:10 -06:00
adfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
affs [PATCH] affs: implement ->drop_inode 2007-02-20 17:10:15 -08:00
afs [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
autofs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
autofs4 [PATCH] autofs4: check for directory re-create in lookup 2007-02-20 17:10:15 -08:00
befs [PATCH] mark struct inode_operations const 1 2007-02-12 09:48:46 -08:00
bfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
cifs [CIFS] cifs_prepare_write was incorrectly rereading page in some cases 2007-03-06 00:31:00 +00:00
coda [PATCH] sysctl: remove insert_at_head from register_sysctl 2007-02-14 08:09:59 -08:00
configfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
cramfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
debugfs debugfs: Remove misleading comments. 2007-02-16 15:19:17 -08:00
devpts [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
dlm [PATCH] mark struct file_operations const 6 2007-02-12 09:48:45 -08:00
ecryptfs [PATCH] ecryptfs: handle AOP_TRUNCATED_PAGE better 2007-03-05 07:57:53 -08:00
efs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
exportfs
ext2 [PATCH] ext[234]: update documentation 2007-02-20 17:10:14 -08:00
ext3 [PATCH] ext[34]: EA block reference count racing fix 2007-03-01 14:53:38 -08:00
ext4 [PATCH] ext[34]: EA block reference count racing fix 2007-03-01 14:53:38 -08:00
fat [PATCH] FAT: DIO-write fallback to normal buffered 2007-02-20 17:10:14 -08:00
freevxfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
fuse [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
gfs2 [GFS2] fix hangup when multiple processes are trying to write to the same file 2007-03-07 13:58:02 -05:00
hfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
hfsplus [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
hostfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
hpfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
hppfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
hugetlbfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
isofs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
jbd [PATCH] jbd: wait for already submitted t_sync_datalist buffer to complete 2006-12-22 08:55:51 -08:00
jbd2
jffs2 Merge git://git.infradead.org/mtd-2.6 2007-02-19 13:34:11 -08:00
jfs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6 2007-02-26 11:44:51 -08:00
lockd Replace remaining references to "driverfs" with "sysfs". 2007-02-17 19:13:42 +01:00
minix [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
msdos [PATCH] mark struct inode_operations const 2 2007-02-12 09:48:46 -08:00
ncpfs ncpfs: make sure server connection survives a kill 2007-03-06 13:26:27 +01:00
nfs [PATCH] sysctl: remove insert_at_head from register_sysctl 2007-02-14 08:09:59 -08:00
nfs_common
nfsd [PATCH] Fix a free-wrong-pointer bug in nfs/acl server. 2007-02-19 16:13:28 -08:00
nls
ntfs [PATCH] sysctl: remove the proc_dir_entry member for the sysctl tables 2007-02-14 08:10:00 -08:00
ocfs2 Fix typos concerning hierarchy 2007-02-17 19:23:03 +01:00
openpromfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
partitions Driver: remove redundant kobject_unregister checks 2007-02-16 15:19:17 -08:00
proc [PATCH] Missing __user in pointer referenced within copy_from_user 2007-02-20 17:10:15 -08:00
qnx4 [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
ramfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
reiserfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
romfs [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
smbfs [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
sysfs [PATCH] suspend regression: sysfs deadlock 2007-03-06 17:59:14 -08:00
sysv [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
udf [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
ufs [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
vfat [PATCH] mark struct inode_operations const 3 2007-02-12 09:48:46 -08:00
xfs [PATCH] xfs warning fix 2007-02-20 17:10:13 -08:00
aio.c [PATCH] Transform kmem_cache_alloc()+memset(0) -> kmem_cache_zalloc(). 2007-02-11 10:51:27 -08:00
attr.c
bad_inode.c [PATCH] mark struct inode_operations const 1 2007-02-12 09:48:46 -08:00
binfmt_aout.c
binfmt_elf_fdpic.c [PATCH] Remove final references to deprecated "MAP_ANON" page protection flag 2007-02-11 10:51:17 -08:00
binfmt_elf.c [PATCH] x86: Don't require the vDSO for handling a.out signals 2007-02-13 13:26:26 +01:00
binfmt_em86.c
binfmt_flat.c [PATCH] uclinux: correctly remap bin_fmtflat exe allocated mem regions 2007-02-09 10:45:33 -08:00
binfmt_misc.c [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
binfmt_script.c
binfmt_som.c
bio.c
block_dev.c [PATCH] lockdep: annotate BLKPG_DEL_PARTITION 2007-02-20 17:10:16 -08:00
buffer.c [PATCH] fs: nobh_truncate_page() fix 2007-03-06 09:30:25 -08:00
char_dev.c [PATCH] rework reserved major handling 2007-02-20 17:10:13 -08:00
compat_ioctl.c
compat.c
dcache.c Revert "[PATCH] Fix d_path for lazy unmounts" 2007-02-13 12:08:18 -08:00
dcookies.c
direct-io.c
dnotify.c
dquot.c [PATCH] sysctl: remove insert_at_head from register_sysctl 2007-02-14 08:09:59 -08:00
drop_caches.c [PATCH] remove invalidate_inode_pages() 2007-02-11 10:51:31 -08:00
eventpoll.c
exec.c [PATCH] Transform kmem_cache_alloc()+memset(0) -> kmem_cache_zalloc(). 2007-02-11 10:51:27 -08:00
fcntl.c
fifo.c
file_table.c
file.c [PATCH] fdtable: Provide free_fdtable() wrapper 2006-12-22 08:55:50 -08:00
filesystems.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
fs-writeback.c Write back inode data pages even when the inode itself is locked 2007-01-26 12:53:20 -08:00
generic_acl.c
inode.c [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
inotify_user.c [PATCH] inotify: read return val fix 2007-02-12 09:48:28 -08:00
inotify.c
internal.h
ioctl.c
ioprio.c [PATCH] pid: replace do/while_each_task_pid with do/while_each_pid_task 2007-02-12 09:48:32 -08:00
Kconfig Remove JFFS (version 1), as scheduled. 2007-02-17 16:10:59 -05:00
Kconfig.binfmt
libfs.c [PATCH] shmem and simple const super_operations 2007-03-05 07:57:51 -08:00
locks.c
Makefile Remove JFFS (version 1), as scheduled. 2007-02-17 16:10:59 -05:00
mbcache.c
mpage.c
namei.c [PATCH] __page_symlink retry loop error code fix 2007-02-16 08:13:56 -08:00
namespace.c [PATCH] Transform kmem_cache_alloc()+memset(0) -> kmem_cache_zalloc(). 2007-02-11 10:51:27 -08:00
nfsctl.c
no-block.c
open.c
pipe.c [PATCH] AUDIT_FD_PAIR 2007-02-17 21:30:15 -05:00
pnode.c
pnode.h
posix_acl.c
quota_v1.c
quota_v2.c
quota.c
read_write.c [PATCH] FS: speed up rw_verify_area() 2007-02-12 09:48:29 -08:00
read_write.h
readdir.c
select.c
seq_file.c
splice.c
stack.c [PATCH] fs/stack.c: Copy i_nlink after all other attributes are copied 2007-02-19 14:21:50 -08:00
stat.c
super.c [PATCH] Mark struct super_operations const 2007-02-12 09:48:47 -08:00
sync.c
utimes.c
xattr_acl.c [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
xattr.c