yaffs-ecoscentric-gpl: yaffs_fs.c history

yaffs: Improve debug chunk erased checking, change refreshPeriod

Thu, 29 Apr 2010 13:40:28 +1200

yaffs: Improve debug chunk erased checking, change refreshPeriod

Normalise macro to YAFFS_CONFIG_ALWAYS_CHECK_CHUNK_ERASED.
This reduces performance so output kernel message warning this is enabled.

Change refreshPeriod to make it much slower.

Signed-off-by: Charles Manning

yaffs Some cleanups.

Tue, 20 Apr 2010 17:12:46 +1200

yaffs Some cleanups.

Update copyright messages.
Clean up tracing to use TSTR and KERN_DEBUG.
Remove cvs $Id.
Change /proc/yaffs_debug to /proc/yaffs_stats.
... and a few other clean ups.

Signed-off-by: Charles Manning

yaffs: Clean up 64-bit compilation

Mon, 26 Apr 2010 13:31:33 +1200

yaffs: Clean up 64-bit compilation

Change format fields to work properly with 64-bit compilation.

Change name of background thread to get rid of pointer calculations.

Signed-off-by: Charles Manning

yaffs: More background gc tweaks.

Tue, 20 Apr 2010 14:36:01 +1200

yaffs: More background gc tweaks.

Slight changes to urgency thresholds

Fix problem where background gc was interfering with sync resulting in
checkpoints being lost.

Add more tracing for background gc.

Signed-off-by: Charles Manning

yaffs New background garbage collector and related tweaks

Fri, 16 Apr 2010 15:39:16 +1200

yaffs New background garbage collector and related tweaks

This commit
- introduces the yaffs background garbage collection feature
- tweaks the foregound garbage collection to do less work
- changes the way auto-checkpointing works
- tweaks the block refreshing logic.

The aim of the background garbage collector is to do at least some of the
garbage collection in the background so that writing operations will not have
to do as much garbage collection which should make writes faster. The amount of
background garbage collection is controlled by the ratio between the amount of
erased space vs the amount of free space:
* If less than quarter of free space is erased, then background gc is frequent.
* Else if less than a half of the free space is erased, then background gc is
still done reasonably frequently.
* else (at least half of the free space is erased) the background gc is done
infrequently.

Background gc is not attempted if the partition is checkpointed since that would
invalidate the checkpoint.

The auto-checkpointing feature has changed slightly. If the yaffs_auto_checkpoint
value is set to 1 or 2 then the auto checkpointing will be blocked if the erased
space is less than half the free space (ie. the auto-checkpointing is blocked to
allow background gc to progress). Oring in 4 into the yaffs_auto_checkpoint will
do a one-shot override, forcing a checkpoint and suspending background gc until
the partition is dirtied by a write, erase etc.

The block refreshing control has been changed. The dev->param.refreshPeriod now
controls how many blocks are garbage collected before another refresh is performed.
Values around 1000 probably make the best sense.

Signed-off-by: Charles Manning

work in progress

Fri, 16 Apr 2010 12:13:27 +1200

work in progress

Tweak nfs support

Wed, 14 Apr 2010 11:24:26 +1200

Tweak nfs support

Fix problem that caused a regression in busybox rm on directories
with many files.

Limit the feature to only compile with more recent kernels that have
all the required features.

Signed-off-by: Charles Manning

Add one-shot feature for yaffs auto checkpointing.

Mon, 12 Apr 2010 16:55:22 +1200

Add one-shot feature for yaffs auto checkpointing.

This feature is enabling by ORing in 0x04 to the yaffs_auto_checkpoint
module parameter. This will do a one-shot checkpoint on the next sync and
the bit will then be reset.

This is a nice way to force a checkpoint on the next sync. eg.
echo 6 > /sys/modules/yaffs/parameters/yaffs_auto_checkpoint
sync
yaffs_auto_checkpoint will now be 2

Signed-off-by: Charles Manning

Add nfs support.

Tue, 30 Mar 2010 14:42:21 +1300

Add nfs support.
This is a modified version of the patch suplied by
Jean-Loup Sabatier

Signed-off-by: Charles Manning

Add garbage collection control

Mon, 15 Mar 2010 23:10:33 +0000

Add garbage collection control

Add more detail to yaffs_debug

Mon, 15 Mar 2010 22:27:15 +0000

Add more detail to yaffs_debug

Add debug proc entry for gathering gc stats

Mon, 15 Mar 2010 06:28:36 +0000

Add debug proc entry for gathering gc stats

Get rid of kernel lock, change stats to __u32

Mon, 15 Mar 2010 06:07:44 +0000

Get rid of kernel lock, change stats to __u32

Add conditional compilation for background processing

Wed, 10 Mar 2010 01:22:19 +0000

Add conditional compilation for background processing

Add background processing of updated directories

Tue, 09 Mar 2010 04:12:00 +0000

Add background processing of updated directories

Add block refreshing feature

Thu, 25 Feb 2010 22:41:46 +0000

Add block refreshing feature

Fix parameter handling

Fri, 19 Feb 2010 01:19:12 +0000

Fix parameter handling

Rationalise context and parameter handling

Thu, 18 Feb 2010 01:18:04 +0000

Rationalise context and parameter handling

Prevent resizes bigger than 2GBytes

Wed, 10 Feb 2010 03:54:08 +0000

Prevent resizes bigger than 2GBytes

Add own zero_user_segment for older kernels

Tue, 19 Jan 2010 21:16:30 +0000

Add own zero_user_segment for older kernels

Move tracing out of yportenv.h

Mon, 11 Jan 2010 04:06:46 +0000

Move tracing out of yportenv.h

FSX runs much better with this

Wed, 23 Dec 2009 03:14:17 +0000

FSX runs much better with this

New fix for readdir hang

Sun, 29 Nov 2009 21:50:10 +0000

New fix for readdir hang

Revert readdir locking fix that doesn't work properly

Sun, 29 Nov 2009 21:42:47 +0000

Revert readdir locking fix that doesn't work properly

Change locking to allow reentry during readdir

Wed, 11 Nov 2009 02:11:13 +0000

Change locking to allow reentry during readdir

Add fix for hanging objects

Sat, 07 Nov 2009 02:06:58 +0000

Add fix for hanging objects

Runtime disbale of lazy loading. Fix problem where resize was breading rename shadowing

Thu, 15 Oct 2009 00:45:46 +0000

Runtime disbale of lazy loading. Fix problem where resize was breading rename shadowing

Allow the disabling of tags ECC

Wed, 14 Oct 2009 00:01:56 +0000

Allow the disabling of tags ECC

Improve sync to flush metadata

Wed, 23 Sep 2009 23:24:55 +0000

Improve sync to flush metadata

More recent 2.6.8 versions need this change too

Fri, 18 Sep 2009 00:39:21 +0000

More recent 2.6.8 versions need this change too

Get directory mtime to update correctly

Tue, 26 May 2009 01:22:44 +0000

Get directory mtime to update correctly

Fix -ENOSPC to work properly with zero length writes

Tue, 12 May 2009 02:23:51 +0000

Fix -ENOSPC to work properly with zero length writes

This file escaped copyright date update. Fixed.

Tue, 17 Mar 2009 01:12:00 +0000

This file escaped copyright date update. Fixed.

One whitespace fix

Mon, 09 Mar 2009 13:08:09 +0000

One whitespace fix
remove one line of unused code

More formatting

Mon, 09 Mar 2009 07:25:09 +0000

More formatting

Major whitespace/style changes to match Linux checkpatch.pl code style

Fri, 06 Mar 2009 17:20:49 +0000

Major whitespace/style changes to match Linux checkpatch.pl code style

Change inode deletion to prevent issue raised by YBUG

Thu, 05 Mar 2009 01:45:28 +0000

Change inode deletion to prevent issue raised by YBUG

Get rid of KERN_DEBUG so that TRACE_OS works consistently

Thu, 05 Mar 2009 01:05:28 +0000

Get rid of KERN_DEBUG so that TRACE_OS works consistently

Add Linux 2.6.29 support

Sun, 01 Mar 2009 23:52:28 +0000

Add Linux 2.6.29 support

Clean up ununed variable and formatting

Wed, 04 Feb 2009 21:40:27 +0000

Clean up ununed variable and formatting

Change Linux glue code to work with 2.6.28

Thu, 22 Jan 2009 00:45:54 +0000

Change Linux glue code to work with 2.6.28

Add autocheckpoint control

Sun, 18 Jan 2009 21:50:37 +0000

Add autocheckpoint control

Add kmap for highmem access

Thu, 28 Aug 2008 02:42:11 +0000

Add kmap for highmem access

Fix compilation on Linux 2.6.26, fix compilation warnings

Wed, 23 Jul 2008 03:35:12 +0000

Fix compilation on Linux 2.6.26, fix compilation warnings

Some cleanups, Linux 2.6.25 handling, fix handing of root permissions

Thu, 03 Jul 2008 20:06:05 +0000

Some cleanups, Linux 2.6.25 handling, fix handing of root permissions

Check in inband tags, some extra yaffs direct functions and some other changes

Mon, 05 May 2008 07:58:58 +0000

Check in inband tags, some extra yaffs direct functions and some other changes

Cleanup patch - Remove all trailing whitespace and fix a few typos.

Thu, 13 Dec 2007 15:35:17 +0000

Cleanup patch - Remove all trailing whitespace and fix a few typos.

Change checkpoint to calculate number of blocks required instead of using a hardcoded value

Mon, 03 Dec 2007 03:21:48 +0000

Change checkpoint to calculate number of blocks required instead of using a hardcoded value

Add support 2.6.23 filesystem interface API.

imcd <imcd> — Wed, 19 Sep 2007 20:35:40 +0000

Add support 2.6.23 filesystem interface API.

Fix infinite loop when parsing numeric trace flags written to /proc/yaffs.

imcd <imcd> — Thu, 16 Aug 2007 20:42:11 +0000

Fix infinite loop when parsing numeric trace flags written to /proc/yaffs.

Rolling in Ians and other changes

Wed, 18 Jul 2007 19:40:37 +0000

Rolling in Ians and other changes

Adding checkpoint and robustness improvements

Tue, 15 May 2007 20:07:40 +0000

Adding checkpoint and robustness improvements

Add read-only remount patch

Tue, 20 Mar 2007 20:59:40 +0000

Add read-only remount patch

Updated headers so they really are the same

Wed, 14 Feb 2007 01:09:06 +0000

Updated headers so they really are the same

normalise licence headers and attributions

Mon, 12 Feb 2007 16:55:25 +0000

normalise licence headers and attributions

Update for Linux 2.6.19 support

Fri, 19 Jan 2007 04:07:48 +0000

Update for Linux 2.6.19 support

Add Phils checkpoint configuration

Tue, 19 Dec 2006 21:33:41 +0000

Add Phils checkpoint configuration

Fix autodetection value

Tue, 24 Oct 2006 18:09:15 +0000

Fix autodetection value

Add large NAND support and improve retirement handling

Tue, 03 Oct 2006 10:13:03 +0000

Add large NAND support and improve retirement handling

Interworking with 2.6.18 kernel enabled

vwool <vwool> — Tue, 26 Sep 2006 13:28:13 +0000

Interworking with 2.6.18 kernel enabled

Notable is that to enable it for yaffs1 compatibility mode, I introduced
a workaround (translate_spare2oob/translate_oob2spare) which should be
redesigned if possible. The thing is that yaffs1 presumes SmartMedia OOB
layout which might be not true for a lot of modern flash controllers, so
there has to be translation.
Or, in case we get to tags inband, this workaround will become useless.