linux-toradex.git, branch v2.6.32.3

Linux 2.6.32.3

2010-01-06T23:07:45+00:00

generic_permission: MAY_OPEN is not write access

2010-01-06T23:05:26+00:00

commit 7ea6600148c265b1fd53e521022b1d7aec81d974 upstream.

generic_permission was refusing CAP_DAC_READ_SEARCH-enabled
processes from opening DAC-protected files read-only, because
do_filp_open adds MAY_OPEN to the open mask.

Ignore MAY_OPEN.  After this patch, CAP_DAC_READ_SEARCH is
again sufficient to open(fname, O_RDONLY) on a file to which
DAC otherwise refuses us read permission.

Reported-by: Mike Kazantsev 
Signed-off-by: Serge E. Hallyn 
Tested-by: Mike Kazantsev 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

rt2x00: Disable powersaving for rt61pci and rt2800pci.

2010-01-06T23:05:23+00:00

commit 93b6bd26b74efe46b4579592560f9f1cb7b61994 upstream.

We've had many reports of rt61pci failures with powersaving enabled.
Therefore, as a stop-gap measure, disable powersaving of the rt61pci
until we have found a proper solution.
Also disable powersaving on rt2800pci as it most probably will show
the same problem.

Signed-off-by: Gertjan van Wingerde 
Acked-by: Ivo van Doorn 
Signed-off-by: John W. Linville 
Signed-off-by: Greg Kroah-Hartman

ksm: fix mlockfreed to munlocked

2010-01-06T23:05:22+00:00

2.6.33-rc1 commit 73848b4684e84a84cfd1555af78d41158f31e16b, adjusted
to include 31e855ea7173bdb0520f9684580423a9560f66e0's movement of
the unlock_page(oldpage), but omit other intervening cleanups.

When KSM merges an mlocked page, it has been forgetting to munlock it:
that's been left to free_page_mlock(), which reports it in /proc/vmstat
as unevictable_pgs_mlockfreed instead of unevictable_pgs_munlocked,
which indicates that such pages _might_ be left unevictable for long
after they should be evictable.  Call munlock_vma_page() to fix that.

Signed-off-by: Hugh Dickins 
Signed-off-by: Greg Kroah-Hartman

vmscan: do not evict inactive pages when skipping an active list scan

2010-01-06T23:05:21+00:00

commit b39415b2731d7dec5e612d2d12595da82399eedf upstream.

In AIM7 runs, recent kernels start swapping out anonymous pages well
before they should.  This is due to shrink_list falling through to
shrink_inactive_list if !inactive_anon_is_low(zone, sc), when all we
really wanted to do is pre-age some anonymous pages to give them extra
time to be referenced while on the inactive list.

The obvious fix is to make sure that shrink_list does not fall through to
scanning/reclaiming inactive pages when we called it to scan one of the
active lists.

This change should be safe because the loop in shrink_zone ensures that we
will still shrink the anon and file inactive lists whenever we should.

[kosaki.motohiro@jp.fujitsu.com: inactive_file_is_low() should be inactive_anon_is_low()]
Reported-by: Larry Woodman 
Signed-off-by: Rik van Riel 
Acked-by: Johannes Weiner 
Cc: Tomasz Chmielewski 
Signed-off-by: KOSAKI Motohiro 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Cc: Rik Theys 
Signed-off-by: Greg Kroah-Hartman

lguest: fix bug in setting guest GDT entry

2010-01-06T23:05:19+00:00

commit 3e27249c84beed1c79d767b350e52ad038db9053 upstream.

We kill the guest, but then we blatt random stuff.

Reported-by: Dan Carpenter 
Signed-off-by: Rusty Russell 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

ext4: Update documentation to correct the inode_readahead_blks option name

2010-01-06T23:05:18+00:00

commit 6d3b82f2d31f22085e5711b28dddcb9fb3d97a25 upstream.

Per commit 240799cd, the option name for readahead should be
inode_readahead_blks, not inode_readahead.

Signed-off-by: Fang Wenqi 
Signed-off-by: "Theodore Ts'o" 
Signed-off-by: Greg Kroah-Hartman

sched: Sched_rt_periodic_timer vs cpu hotplug

2010-01-06T23:05:17+00:00

commit 047106adcc85e3023da210143a6ab8a55df9e0fc upstream.

Heiko reported a case where a timer interrupt managed to
reference a root_domain structure that was already freed by a
concurrent hot-un-plug operation.

Solve this like the regular sched_domain stuff is also
synchronized, by adding a synchronize_sched() stmt to the free
path, this ensures that a root_domain stays present for any
atomic section that could have observed it.

Reported-by: Heiko Carstens 
Signed-off-by: Peter Zijlstra 
Acked-by: Heiko Carstens 
Cc: Gregory Haskins 
Cc: Siddha Suresh B 
Cc: Martin Schwidefsky 
LKML-Reference: <1258363873.26714.83.camel@laptop>
Signed-off-by: Ingo Molnar 
Signed-off-by: Greg Kroah-Hartman

amd64_edac: fix forcing module load/unload

2010-01-06T23:05:16+00:00

commit 43f5e68733cfe8bed3c30b5c14c4993dffb29766 upstream.

Clear the override flag after force-loading the module.

Signed-off-by: Borislav Petkov 
Signed-off-by: Greg Kroah-Hartman

amd64_edac: make driver loading more robust

2010-01-06T23:05:14+00:00

commit 56b34b91e22313294154cee0c16e294cf8a45b61 upstream.

Currently, the module does not initialize fully when the DIMMs aren't
ECC but remains still loaded. Propagate the error when no instance of
the driver is properly initialized and prevent further loading.

Reorganize and polish error handling in amd64_edac_init() while at it.

Signed-off-by: Borislav Petkov 
Signed-off-by: Greg Kroah-Hartman