As the array-wide clean bit (in the superblock) is set more agressively than
the bits in the bitmap are cleared, it is possible to have an array which is
clean despite there being bits set in the bitmap.
These bits will currently never get cleared, as they can only be cleared by a
resync pass, which never happens.
No, when reading bits from disk, be aware of whether the whole array is known
to be in sync, and act accordingly.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The debugging message printed the wrong pid, which didn't help remove bugs....
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
bitmap_daemon_work clears bits in the bitmap for blocks that haven't been
written to for a while. It needs to be called regularly to make sure the
bitmap doesn't endup full of ones .... but it wasn't.
So call it from the increasingly-inaptly-named md_check_recovery
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1/ When init from disk, it is a BUG if there is nowhere
to init from,
2/ use seq_path to print path in /proc/mdstat
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
With this patch, the intent to write to some block in the array can be logged
to a bitmap file. Each bit represents some number of sectors and is set
before any update happens, and only cleared when all writes relating to all
sectors are complete.
After an unclean shutdown, information in this bitmap can be used to optimise
resync - only sectors which could be out-of-sync need to be updated.
Also if a drive is removed and then added back into an array, the recovery can
make use of the bitmap to optimise reconstruction. This is not implemented in
this patch.
Currently the bitmap is stored in a file which must (obviously) be stored on a
separate device.
The patch only provided infrastructure. It does not update any personalities
to bitmap intent logging.
Md arrays can still be used with no bitmap file. This patch has minimal
impact on such arrays.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1/ change the return value (which is number-of-sectors synced)
from 'int' to 'sector_t'.
The number of sectors is usually easily small enough to fit
in an int, but if resync needs to abort, it may want to return
the total number of remaining sectors, which could be large.
Also errors cannot be returned as negative numbers now, so use
0 instead
2/ Add a 'skipped' return parameter to allow the array to report
that it skipped the sectors. This allows md to take this into account
in the speed calculations.
Currently there is no important skipping, but the bitmap-based-resync
that is coming will use this.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When md marks the superblock dirty before a write, it calls
generic_make_request (to write the superblock) from within
generic_make_request (to write the first dirty block), which could cause
problems later.
With this patch, the superblock write is always done by the helper thread, and
write request are delayed until that write completes.
Also, the locking around marking the array dirty and writing the superblock is
improved to avoid possible races.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
md_enter_safemode checks if it is time to mark the md superblock as 'clean'.
i.e. if all writes have completed and a suitable delay has passed.
This is currently called from md_handle_safemode which in-turn is called
(almost) every time md_check_recovery is called, and from the end of
md_do_sync which causes the mddev->thread to run, which will always call
md_check_recovery as well.
So it doesn't need to be a separate function and fits quite well into
md_check_recovery.
The "almost" is because multipathd calls md_check_recovery but not
md_handle_safemode. This is OK because the code from md_enter_safemode is a
no-op if mddev->safemode == 0, which it always is for a multipathd (providing
we don't allow it to be set to 2 on a signal...)
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Currently if add_new_disk is used to hot-add a drive to a degraded array,
recovery doesn't start ... because we didn't tell it to.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
i.e. missing or failed drives are moved to the end of the list. The means
a 3 drive md array with the first drive missing can be shrunk to a two
drive array. Currently that isn't possible.
Also, the "last_used" device number might be out-of-range after the number
of devices is reduced, so we set it to 0.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Several drivers miss filling in the access_align field. So this patch has
them fill it in.
Signed-off-by: James Simmons <jsimmons@www.infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Shrink the stack when calling the drawing alignment functions.
Signed-off-by: James Simmons <jsimmons@www.infradead.org>
Cc: "Antonino A. Daplas" <adaplas@hotpop.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Improve the fonts for use with the framebuffer.
I've added all the characters marked 'FIXME' in the sun12x22 font and
created a 10x18 font (based on the sun12x22 font) and a 7x14 font (based
on the vga8x16 font).
This patch is non-intrusive, no options are enabled by default so most
users won't notice a thing.
I am placing my changes under the GPL, however, I've not seen any copyright
notices on the sun12x22 font and the vga8x16 font which I derived my new
fonts from so I don't know what the copyright status is.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Patch adds pci ID for CT 69000 chipset.
Signed-off-by: James Simmons <jsimmons@www.infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add support for the Arc monochrome LCD board.
The board uses KS108 controllers to drive individual 64x64 LCD matrices.
The board can be paneled in a variety of setups such as 2x1=128x64,
4x4=256x256 and so on. The board/host interface is through GPIO.
Signed-off-by: Jaya Kumar <jayalk@intworks.biz>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: <linux-fbdev-devel@lists.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add a small documentation of the driver parameters.
Signed-off-by: Sylvain Meyer <sylvain.meyer@worldonline.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Changed the tests in intelfb_set_par to check also the parameter
var.accel_flags. If null, do nothing about ring buffers.
Now, the DirectFB i830 driver could nicely work even if intelfb is hw
accelerated. Just change the /etc/fb.modes file to disable console hw
acceleration when starting a DirectFB app.
Signed-off-by: Sylvain Meyer <sylvain.meyer@worldonline.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Currently when going from vgacon to fbcon the VT screenbuffer are often
different sizes. In the case when they are different sizes a new VT
screenbuffer is allocated and the contents are copied into the new buffer.
Currently the amount copied from VGA text memory to the new screenbuf is
the size of the framebuffer console. If the framebuffer console new VT
screen buffer is greater than the VGA text memory size then we get some of
the VGA BIOS contents as well.
This patch will only allow you to copy up to the size of VGA text memory
now. The rest is filled with erase characters.
Initial patch by Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: James Simmons <jsimmons@www.infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Since no one is using the inbuf, outbuf of struct fb_pixmap I removed their
use in the framebuffer console. The idea is instead move the pixmap
functionality below the accelerated functions intead of on top as the way
it is now. If there is no objection please apply. This is against Linus
latestr GIT tree. Thank you.
Signed-off-by: James Simmons <jsimmons@www.infradead.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix the size passed to release_mem_region in an error path.
Also adjust the message printed when vesafb cannot load; the comment there
already says this must not be fatal, so the message should also not mention
the word 'abort' otherwise indicating a problem to worry about in the log.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Gerd Knorr <kraxel@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
s1d13xxxfb_remove() is referenced from s1d13xxxfb_probe(), which is marked
__devinit(). So s1d13xxxfb_remove() cannot be marked __devexit.
Does this all make sense? Clearly the __devexit section will still be in
core when the __devinit code is run, if the driver was loaded as a module.
But I suppose that if the driver is statically linked, the __devexit section
might be dropped early in boot. Still, we wouldn't drop __devexit prior to
initcall completion, at which point the __devinit code has all been run
anyway.
verdict: this code was legal and made sense. Is this a generic problem, or an
arm-specific problem?
UPD include/linux/compile.h
CC init/version.o
LD init/built-in.o
LD .tmp_vmlinux1
`.exit.text' referenced in section `.init.text' of drivers/built-in.o: defined in discarded section `.exit.text' of drivers/built-in.o
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I don't see any reason why the framebuffer should need to be cleared,
and it makes Tux vanish.
Cc: <linux-fbdev-devel@lists.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The current isofs treatment of hidden files is flawed in two ways. First,
it does not provide sufficient granularity; it hides both 'hidden' files
and 'associated' files (resource fork for Mac files). Second, the default
behavior to completely strip hidden files, while an admirable
implementation of the spec, is a poor choice given the real world use of
hidden files as a poor mans copy protection scheme for MSDOS and Windows
based systems. A longer description of this is available here:
http://www.uwsg.iu.edu/hypermail/linux/kernel/0205.3/0267.html
This patch was originally built after a few private conversations with Alan
Cox; I shamefully failed to persist in seeing it go forward, I hope to make
amends now.
This patch introduces granularity by allowing explicit control for both
hidden and associated files. It also reverses the default so that by
default, hidden files are treated as regular files on the iso9660 file
system.
This allow Wine to process Windows CDs, including those that are hybrid
Mac/Windows CDs properly and completely, without our having to go muck up
peoples fstabs as we do now. (I have tested this with such a hybrid +
hidden CD and have verified that this patch works as claimed).
Signed-off-by: Jeremy White <jwhite@codeweavers.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Handle the case where the variable-sized part of a rock-ridge directory entry
overhangs the end of the buffer which we allocated for it.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The silly thing does:
struct foo { ... };
...
#define foo 42
so you can no longer refer to `struct foo' in C code.
Rename the structures.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The bug in rock.c is that it's totally trusting of the contents of the
directories. If the directory says there's a continuation 10000 bytes into
this 4k block then we cheerily poke around in memory we don't own and oops.
So change rock_continue() to apply various sanity checks, at least ensuring
that the offset+length remain within the bounds for the header part of a
struct rock_ridge directory entry.
Note that the kernel can still overindex the buffer due to the variable size
of the rock-ridge directory entries. We cannot check that in rock_continue()
unless we go parse the directory entry's signature and work out its size.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
So we have a couple of rock-ridge bugs. First up, rotoroot the poor thing
into something which it is possible to work on.
Feed rock.h through Lindent, tidy a couple of things by hand.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- remove the MAYBE_CONTINUE macro
- kfree(NULL) is OK.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- Remove the SETUP_ROCK_RIDGE macro.
- In rock_ridge_symlink_readpage(), rename raw_inode to raw_de. It points
at a directory entry, not an inode.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix stuff which Lindent got wrong, rework a few deeply-nested blocks.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Trying to turn rock.c into something which humans can read so we can fix some
bugs.
Start out by feeding it through scripts/Lindent.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
For browsable autofs maps, a mount request that arrives at the same time an
expire is happening can fail to perform the needed mount.
This happens becuase the directory exists and so the revalidate succeeds when
we need it to fail so that lookup is called on the same dentry to do the
mount. Instead lookup is called on the next path component which should be
whithin the mount, but the parent isn't mounted.
The solution is to allow the revalidate to continue and perform the mount as
no directory creation (at mount time) is needed for browsable mount entries.
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
At the tail end of an expire it's possible for a process to enter
autofs4_wait, with a waitq type of NFY_NONE but find that the expire is
finished. In this cause autofs4_wait will try to create a new wait but not
notify the daemon leading to a hang. As the wait type is meant to delay mount
requests from revalidate or lookup during an expire and the expire is done all
we need to do is check if the dentry is a mountpoint. If it's not then we're
done.
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
While this is not a solution to bind and move mounts on autofs owned
directories it is necessary to fix the trady error handling.
At least it avoids the kernel panic I observed checking out bug #4589.
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a race in the command reference counting logic by putting
spinlocks around kobject_put() in the command_put function.
- Also added debug messages.
- Changed a memcpy to memcpy_fromio since we are reading from io space.
Signed-off-by: Max Asbock <masbock@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch rewrites the handling of remote control events. Rather than making
them available from a special file in the ibmasmfs, now the events from the
RSA card get translated into kernel input events and injected into the input
subsystem. The driver now will generate two /dev/input/eventX nodes -- one
for the keyboard and one for the mouse. The mouse node generates absolute
events more like a touch pad than a mouse.
Signed-off-by: Vernon Mauery <vernux@us.ibm.com>
Signed-off-by: Max Asbock <masbock@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Due to my incomplete understanding of the wait_event_interruptible() function
threads waiting for service processor events were not woken up. This patch
fixes that problem.
Signed-off-by: Max Asbock <masbock@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
First of a series of patches for the ibmasm driver. (that is the driver for
the IBM xSeries RSA service processor)
To summarize what they do:
[1] change a #define for the buffer size for commands
[2] Fix a bug where threads in the event handling code calling
wait_event_interruptible() weren't woken up as expected.
[3] Redesigned how remote mouse and keyboard events received by the driver
are handled.
[4] Fixed a race in the command reference counting logic.
This patch:
- change a #define for the buffer size for commands
Signed-off-by: Max Asbock <masbock@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Wait for interrupt and clear status pending after resetting the reader.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The kernel takes a very long time to boot if the memory size is bigger then
32767 MB. The memory size is contained in a structure created by an sclp
call. The kernel accesses the field with a LH instrution which performs a
sign extension of a 16 bit word. In the case of a memory size with bit 2^15
set this results in a very large value and the memory detection just loops for
a long time. In addition if more then 64 GB are used on a 64 bit system the
memory size is read from an incorrect storage location.
Use zero-extention to read the 16 bit memory size and the correct offset to
read the 4 byte memory size on 64 bit.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
NeilBrown