linux-toradex.git/fs/ext3/balloc.c, branch v2.6.19-rc2

[PATCH] more ext3 16T overflow fixes

2006-09-27T15:26:10+00:00

Some of the changes in balloc.c are just cosmetic, as Andreas pointed out -
if they overflow they'll then underflow and things are fine.

5th hunk actually fixes an overflow problem.

Also check for potential overflows in inode & block counts when resizing.

Signed-off-by: Eric Sandeen 
Cc: Mingming Cao 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ext3: More whitespace cleanups

2006-09-27T15:26:10+00:00

More white space cleanups in preparation of cloning ext4 from ext3.
Removing spaces that precede a tab.

Signed-off-by: Dave Kleikamp 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ext3: more comments about block allocation/reservation code

2006-09-27T15:26:09+00:00

Signed-off-by: Mingming Cao 
Acked-by: Randy Dunlap 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ext3: turn on reservation dump on block allocation errors

2006-09-27T15:26:09+00:00

In the past there were a few kernel panics related to block reservation
tree operations failure (insert/remove etc).  It would be very useful to
get the block allocation reservation map info when such error happens.

Signed-off-by: Mingming Cao 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ext3 and jbd cleanup: remove whitespace

2006-09-27T15:26:09+00:00

Remove whitespace from ext3 and jbd, before we clone ext4.

Signed-off-by: Mingming Cao
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ext3 filesystem bogus ENOSPC with reservation fix

2006-08-27T18:01:30+00:00

To handle the earlier bogus ENOSPC error caused by filesystem full of block
reservation, current code falls back to non block reservation, starts to
allocate block(s) from the goal allocation block group as if there is no
block reservation.

Current code needs to re-load the corresponding block group descriptor for
the initial goal block group in this case.  The patch fixes this.

Signed-off-by: Mingming Cao 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Remove obsolete #include

2006-06-30T17:25:36+00:00

Signed-off-by: Jörn Engel 
Signed-off-by: Adrian Bunk

[PATCH] ext3_fsblk_t: the rest of in-kernel filesystem blocks conversion

2006-06-25T17:01:10+00:00

Convert the ext3 in-kernel filesystem blocks to ext3_fsblk_t.  Convert the
rest of all unsigned long type in-kernel filesystem blocks to ext3_fsblk_t,
and replace the printk format string respondingly.

Signed-off-by: Mingming Cao 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ext3_fsblk_t: filesystem, group blocks and bug fixes

2006-06-25T17:01:10+00:00

Some of the in-kernel ext3 block variable type are treated as signed 4 bytes
int type, thus limited ext3 filesystem to 8TB (4kblock size based).  While
trying to fix them, it seems quite confusing in the ext3 code where some
blocks are filesystem-wide blocks, some are group relative offsets that need
to be signed value (as -1 has special meaning).  So it seem saner to define
two types of physical blocks: one is filesystem wide blocks, another is
group-relative blocks.  The following patches clarify these two types of
blocks in the ext3 code, and fix the type bugs which limit current 32 bit ext3
filesystem limit to 8TB.

With this series of patches and the percpu counter data type changes in the mm
tree, we are able to extend exts filesystem limit to 16TB.

This work is also a pre-request for the recent >32 bit ext3 work, and makes
the kernel to able to address 48 bit ext3 block a lot easier: Simply redefine
ext3_fsblk_t from unsigned long to sector_t and redefine the format string for
ext3 filesystem block corresponding.

Two RFC with a series patches have been posted to ext2-devel list and have
been reviewed and discussed:
http://marc.theaimsgroup.com/?l=ext2-devel&m=114722190816690&w=2

http://marc.theaimsgroup.com/?l=ext2-devel&m=114784919525942&w=2

Patches are tested on both 32 bit machine and 64 bit machine, <8TB ext3 and
>8TB ext3 filesystem(with the latest to be released e2fsprogs-1.39).  Tests
includes overnight fsx, tiobench, dbench and fsstress.

This patch:

Defines ext3_fsblk_t and ext3_grpblk_t, and the printk format string for
filesystem wide blocks.

This patch classifies all block group relative blocks, and ext3_fsblk_t blocks
occurs in the same function where used to be confusing before.  Also include
kernel bug fixes for filesystem wide in-kernel block variables.  There are
some fileystem wide blocks are treated as int/unsigned int type in the kernel
currently, especially in ext3 block allocation and reservation code.  This
patch fixed those bugs by converting those variables to ext3_fsblk_t(unsigned
long) type.

Signed-off-by: Mingming Cao 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] ext3_get_blocks: Adjust reservation window size for mblocks

2006-03-26T16:57:01+00:00

Optimize the block reservation and the multiple block allocation: with the
knowledge of the total number of blocks ahead, set or adjust the reservation
window size properly (based on the number of blocks needed) before block
allocation happens: if there isn't any reservation yet, make sure the
reservation window equals to or greater than the number of blocks needed,
before create an reservation window; if a reservation window is already
exists, try to extends the window size to match the number of blocks to
allocate.  This could increase the possibility of completing multiple blocks
allocation in a single request, as blocks are only allocated in the range of
the inode's reservation window.

Signed-off-by: Mingming Cao 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds