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Balbir Singh 49048622ea sched: fix process time monotonicity 
Spencer reported a problem where utime and stime were going negative despite
the fixes in commit b27f03d4bd. The suspected
reason for the problem is that signal_struct maintains it's own utime and
stime (of exited tasks), these are not updated using the new task_utime()
routine, hence sig->utime can go backwards and cause the same problem
to occur (sig->utime, adds tsk->utime and not task_utime()). This patch
fixes the problem

TODO: using max(task->prev_utime, derived utime) works for now, but a more
generic solution is to implement cputime_max() and use the cputime_gt()
function for comparison.

Reported-by: spencer@bluehost.com
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-09-05 18:14:35 +02:00
..
9p [PATCH] fix ->llseek() for a bunch of directories 2008-08-25 01:18:09 -04:00
adfs [PATCH] fix ->llseek() for a bunch of directories 2008-08-25 01:18:09 -04:00
affs [PATCH] fix ->llseek() for a bunch of directories 2008-08-25 01:18:09 -04:00
afs mm: rename page trylock 2008-08-04 21:31:34 -07:00
autofs
autofs4 [PATCH] fix ->llseek() for a bunch of directories 2008-08-25 01:18:09 -04:00
befs [PATCH] fix ->llseek() for a bunch of directories 2008-08-25 01:18:09 -04:00
bfs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
cifs [CIFS] Turn off Unicode during session establishment for plaintext authentication 2008-08-28 15:32:22 +00:00
coda [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
configfs [PATCH] configfs: Consolidate locking around configfs_detach_prep() in configfs_rmdir() 2008-08-22 11:09:02 -07:00
cramfs cramfs: fix named-pipe handling 2008-08-20 15:40:32 -07:00
debugfs debugfs: Implement debugfs_remove_recursive() 2008-07-21 21:54:59 -07:00
devpts [PATCH] devpts: switch to IDA 2008-08-01 11:25:29 -04:00
dlm dlm: rename structs 2008-08-13 12:47:36 -05:00
ecryptfs eCryptfs: use page_alloc not kmalloc to get a page of memory 2008-07-28 16:30:21 -07:00
efs [PATCH] fix efs_lookup() 2008-08-25 01:18:04 -04:00
exportfs fs: replace remaining __FUNCTION__ occurrences 2008-04-30 08:29:54 -07:00
ext2 vfs: pagecache usage optimization for pagesize!=blocksize 2008-07-28 16:30:21 -07:00
ext3 [PATCH] fix races and leaks in vfs_quota_on() users 2008-08-01 11:25:25 -04:00
ext4 ext4: Initialize writeback_index to 0 when allocating a new inode 2008-08-19 21:14:52 -04:00
fat vfat: fix 'sync' mount deadlock due to BKL->lock_super conversion 2008-08-20 08:31:19 -07:00
freevxfs fs/freevxfs/: proper externs 2008-04-29 08:06:00 -07:00
fuse [PATCH] fix MAY_CHDIR/MAY_ACCESS/LOOKUP_ACCESS mess 2008-07-26 20:53:21 -04:00
gfs2 [PATCH] don't pass nameidata to gfs2_lookupi() 2008-07-26 20:53:36 -04:00
hfs [PATCH] f_count may wrap around 2008-07-26 20:53:40 -04:00
hfsplus [PATCH] f_count may wrap around 2008-07-26 20:53:40 -04:00
hostfs [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
hpfs [patch 05/14] hpfs: dont call permission() 2008-07-26 20:53:13 -04:00
hppfs [patch] hppfs: remove hppfs_permission 2008-07-26 20:53:07 -04:00
hugetlbfs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
isofs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
jbd Merge branch 'core/locking' into core/urgent 2008-08-12 00:11:49 +02:00
jbd2 Merge branch 'core/locking' into core/urgent 2008-08-12 00:11:49 +02:00
jffs2 removed unused #include <linux/version.h>'s 2008-08-23 12:14:12 -07:00
jfs [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
lockd Merge branch 'for-2.6.27' of git://linux-nfs.org/~bfields/linux 2008-08-12 16:39:22 -07:00
minix SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
msdos fatfs: add UTC timestamp option 2008-07-25 10:53:34 -07:00
ncpfs [PATCH] don't pass nameidata to __ncp_lookup_validate() 2008-07-26 20:53:37 -04:00
nfs Revert "UFS: add const to parser token table" 2008-08-04 16:50:38 -07:00
nfs_common
nfsd nfsd: fix buffer overrun decoding NFSv4 acl 2008-09-01 14:24:24 -04:00
nls
ntfs NTFS: update homepage 2008-09-02 19:21:37 -07:00
ocfs2 ocfs2: Increment the reference count of an already-active stack. 2008-08-25 07:29:47 -07:00
omfs omfs: fix oops when file metadata is corrupted 2008-08-15 08:35:44 -07:00
openpromfs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
partitions fs/partitions/efi: convert to pr_debug 2008-07-25 10:53:44 -07:00
proc sched: fix process time monotonicity 2008-09-05 18:14:35 +02:00
qnx4 SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
ramfs ramfs: enable splice write 2008-07-04 09:52:14 +02:00
reiserfs reiserfs: removed duplicated #include 2008-08-12 16:07:30 -07:00
romfs romfs_readpage: don't report errors for pages beyond i_size 2008-07-30 14:30:34 -07:00
smbfs [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
sysfs Use WARN() in fs/sysfs 2008-07-26 12:00:07 -07:00
sysv SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
ubifs UBIFS: xattr bugfixes 2008-08-14 12:46:20 +03:00
udf SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
ufs Revert "UFS: add const to parser token table" 2008-08-04 16:50:38 -07:00
vfat fatfs: add UTC timestamp option 2008-07-25 10:53:34 -07:00
xfs [PATCH] fix ->llseek() for a bunch of directories 2008-08-25 01:18:09 -04:00
aio.c [PATCH] f_count may wrap around 2008-07-26 20:53:40 -04:00
anon_inodes.c flag parameters: NONBLOCK in anon_inode_getfd 2008-07-24 10:47:28 -07:00
attr.c [patch 4/4] vfs: immutable inode checking cleanup 2008-07-26 20:53:28 -04:00
bad_inode.c [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
binfmt_aout.c tracehook: exec 2008-07-26 12:00:08 -07:00
binfmt_elf.c tracehook: exec 2008-07-26 12:00:08 -07:00
binfmt_elf_fdpic.c binfmt_elf_fdpic: Magical stack pointer index, for NEW_AUX_ENT compat. 2008-07-28 18:10:28 +09:00
binfmt_em86.c binfmt_misc.c: avoid potential kernel stack overflow 2008-04-29 08:06:04 -07:00
binfmt_flat.c binfmt_flat: Stub in a FLAT_PLAT_INIT(). 2008-08-11 20:17:55 +09:00
binfmt_misc.c binfmt_misc: fix false -ENOEXEC when coupled with other binary handlers 2008-08-20 15:40:31 -07:00
binfmt_script.c binfmt_misc.c: avoid potential kernel stack overflow 2008-04-29 08:06:04 -07:00
binfmt_som.c tracehook: exec 2008-07-26 12:00:08 -07:00
bio-integrity.c bio-integrity: remove EXPORT_SYMBOL for bio_integrity_init_slab() 2008-07-28 16:30:21 -07:00
bio.c bio: fix __bio_copy_iov() handling of bio->bv_len 2008-08-27 09:50:19 +02:00
block_dev.c [PATCH] switch mtd and dm-table to lookup_bdev() 2008-08-01 11:25:31 -04:00
buffer.c block: submit_bh() inadvertently discards barrier flag on a sync write 2008-08-27 09:50:19 +02:00
char_dev.c Remove the lock_kernel() call from chrdev_open() 2008-06-20 14:05:53 -06:00
compat.c [PATCH] fix regular readdir() and friends 2008-08-25 01:18:08 -04:00
compat_binfmt_elf.c
compat_ioctl.c remove unused #include <linux/dirent.h>'s 2008-07-25 10:53:34 -07:00
dcache.c [PATCH] change d_add_ci argument ordering 2008-08-25 01:18:05 -04:00
dcookies.c
direct-io.c dio: use get_user_pages_fast 2008-07-26 12:00:06 -07:00
dnotify.c [PATCH] split linux/file.h 2008-05-01 13:08:16 -04:00
dquot.c [PATCH] fix races and leaks in vfs_quota_on() users 2008-08-01 11:25:25 -04:00
drop_caches.c vfs: skip inodes without pages to free in drop_pagecache_sb() 2008-04-29 08:06:05 -07:00
eventfd.c flag parameters: check magic constants 2008-07-24 10:47:29 -07:00
eventpoll.c fs/eventpoll.c: fix sys_epoll_create1() comment 2008-08-12 16:07:30 -07:00
exec.c exec: include pagemap.h again to fix build 2008-07-28 16:30:20 -07:00
fcntl.c [PATCH] clean dup2() up a bit 2008-08-01 11:25:24 -04:00
fifo.c [PATCH] reuse xxx_fifo_fops for xxx_pipe_fops 2008-07-26 20:53:06 -04:00
file.c [PATCH] merge locate_fd() and get_unused_fd() 2008-08-01 11:25:23 -04:00
file_table.c [PATCH] f_count may wrap around 2008-07-26 20:53:40 -04:00
filesystems.c
fs-writeback.c VFS: export sync_sb_inodes 2008-07-14 19:10:52 +03:00
generic_acl.c
inode.c fs/inode.c: properly init address_space->writeback_index 2008-08-15 08:35:44 -07:00
inotify.c
inotify_user.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
internal.h
ioctl.c make vfs_ioctl() static 2008-04-29 08:06:00 -07:00
ioprio.c fix setpriority(PRIO_PGRP) thread iterator breakage 2008-08-20 15:40:32 -07:00
Kconfig [CIFS] Reorder cifs config item for better clarity 2008-08-26 18:32:28 +00:00
Kconfig.binfmt sh: Initial ELF FDPIC support. 2008-07-28 18:10:28 +09:00
libfs.c VFS: increase pseudo-filesystem block size to PAGE_SIZE 2008-07-30 09:41:44 -07:00
locks.c SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
Makefile omfs: update kbuild to include OMFS 2008-07-26 12:00:05 -07:00
mbcache.c
mpage.c vfs: add hooks for ext4's delayed allocation support 2008-07-11 19:27:31 -04:00
namei.c [patch 3/4] vfs: remove unused nameidata argument of may_create() 2008-08-01 11:25:30 -04:00
namespace.c [PATCH] pass struct path * to do_add_mount() 2008-08-01 11:25:32 -04:00
nfsctl.c
no-block.c
open.c [PATCH] merge locate_fd() and get_unused_fd() 2008-08-01 11:25:23 -04:00
pipe.c [PATCH] reuse xxx_fifo_fops for xxx_pipe_fops 2008-07-26 20:53:06 -04:00
pnode.c
pnode.h
posix_acl.c
quota.c quota: cleanup loop in sync_dquots() 2008-07-25 10:53:35 -07:00
quota_v1.c quota: move function-macros from quota.h to quotaops.h 2008-07-25 10:53:35 -07:00
quota_v2.c quota: move function-macros from quota.h to quotaops.h 2008-07-25 10:53:35 -07:00
read_write.c Remove BKL from remote_llseek v2 2008-07-02 15:06:27 -06:00
read_write.h
readdir.c [PATCH] fix regular readdir() and friends 2008-08-25 01:18:08 -04:00
select.c Fix performance regression on lmbench select benchmark 2008-06-22 12:23:15 -07:00
seq_file.c [PATCH] deal with the first call of ->show() generating no output 2008-08-25 01:18:10 -04:00
signalfd.c flag parameters: check magic constants 2008-07-24 10:47:29 -07:00
splice.c mm: rename page trylock 2008-08-04 21:31:34 -07:00
stack.c
stat.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
super.c fix soft lock up at NFS mount via per-SB LRU-list of unused dentries 2008-07-24 10:47:15 -07:00
sync.c SYNC_FILE_RANGE_WRITE may and will block. Document that. 2008-07-24 10:47:17 -07:00
timerfd.c flag parameters: check magic constants 2008-07-24 10:47:29 -07:00
utimes.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
xattr.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
xattr_acl.c