kernel/linux.git/drivers/md/dm-snap.c, branch linux-2.6.22.y

dm: disable barriers

2007-08-09T21:27:45+00:00

This patch causes device-mapper to reject any barrier requests. This is done since most of the targets won't handle this correctly anyway. So until the situation improves it is better to reject these requests at the first place. Since barrier requests won't get to the targets, the checks there can be removed. Signed-off-by: Stefan Bader Signed-off-by: Alasdair G Kergon Signed-off-by: Greg Kroah-Hartman

dm snapshot: permit invalid activation

2007-08-09T21:27:44+00:00

Allow invalid snapshots to be activated instead of failing. This allows userspace to reinstate any given snapshot state - for example after an unscheduled reboot - and clean up the invalid snapshot at its leisure. Signed-off-by: Milan Broz Signed-off-by: Alasdair G Kergon Signed-off-by: Greg Kroah-Hartman

[PATCH] make drivers/md/dm-snap.c:ksnapd static

2006-12-08T16:29:09+00:00

Signed-off-by: Adrian Bunk Acked-by: Alasdair G Kergon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] dm: snapshot: abstract memory release

2006-12-08T16:29:09+00:00

Move the code that releases memory used by a snapshot into a separate function. Signed-off-by: Milan Broz Signed-off-by: Alasdair G Kergon Cc: dm-devel@redhat.com Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] dm: map and endio symbolic return codes

2006-12-08T16:29:09+00:00

Update existing targets to use the new symbols for return values from target map and end_io functions. There is no effect on behaviour. Test results: Done build test without errors. Signed-off-by: Kiyoshi Ueda Signed-off-by: Jun'ichi Nomura Signed-off-by: Alasdair G Kergon Cc: dm-devel@redhat.com Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] slab: remove kmem_cache_t

2006-12-07T16:39:25+00:00

Replace all uses of kmem_cache_t with struct kmem_cache. The patch was generated using the following script: #!/bin/sh # # Replace one string by another in all the kernel sources. # set -e for file in `find * -name "*.c" -o -name "*.h"|xargs grep -l $1`; do quilt add $file sed -e "1,\$s/$1/$2/g" $file >/tmp/$$ mv /tmp/$$ $file quilt refresh done The script was run like this sh replace kmem_cache_t "struct kmem_cache" Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

WorkStruct: make allyesconfig

2006-11-22T14:57:56+00:00

Fix up for make allyesconfig. Signed-Off-By: David Howells

[PATCH] dm snapshot: fix freeing pending exception

2006-10-03T15:04:15+00:00

If a snapshot became invalid while there are outstanding pending_exceptions, when pending_complete() processes each one it forgets to remove the corresponding exception from its exception table before freeing it. Fix this by moving the 'out:' label up one statement so that remove_exception() is always called. Then __invalidate_exception() no longer needs to call it and its 'pe' argument become superfluous. Signed-off-by: Alasdair G Kergon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] dm snapshot: tidy pe ref counting

2006-10-03T15:04:14+00:00

Rename sibling_count to ref_count and introduce get and put functions. Signed-off-by: Alasdair G Kergon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] dm snapshot: add workqueue

2006-10-03T15:04:14+00:00

Add a workqueue so that I/O can be queued up to be flushed from a separate thread (e.g. if local interrupts are disabled). A new per-snapshot spinlock pe_lock is introduced to protect queued_bios. Signed-off-by: Alasdair G Kergon Signed-off-by: Mark McLoughlin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds