A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 11:11:45 -04:00
Code Issues Projects Releases Packages Wiki Activity

dm thin metadata: add dm_thin_changed_this_transaction

Browse source 
Introduce dm_thin_changed_this_transaction to dm-thin-metadata to publish a
useful bit of information we're already tracking.  This will help dm thin
decide when to commit.

Signed-off-by: Joe Thornber <[email protected]>
Signed-off-by: Mike Snitzer <[email protected]>
Signed-off-by: Alasdair G Kergon <[email protected]>
This commit is contained in:
Joe Thornber 2012-07-27 15:08:14 +01:00 • committed by Alasdair G Kergon
commit 40db5a5376
2 changed files with 15 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

16
drivers/md/dm-thin-metadata.c
View file

@ -1375,10 +1375,9 @@ static int __insert(struct dm_thin_device *td, dm_block_t block,
if (r)
return r;
if (inserted) {
td->changed = 1;
if (inserted)
td->mapped_blocks++;
td->changed = 1;
}
return 0;
}
@ -1422,6 +1421,17 @@ int dm_thin_remove_block(struct dm_thin_device *td, dm_block_t block)
return r;
}
bool dm_thin_changed_this_transaction(struct dm_thin_device *td)
{
int r;
down_read(&td->pmd->root_lock);
r = td->changed;
up_read(&td->pmd->root_lock);
return r;
}
int dm_pool_alloc_data_block(struct dm_pool_metadata *pmd, dm_block_t *result)
{
int r;

2
drivers/md/dm-thin-metadata.h
View file

@ -148,6 +148,8 @@ int dm_thin_remove_block(struct dm_thin_device *td, dm_block_t block);
/*
* Queries.
*/
bool dm_thin_changed_this_transaction(struct dm_thin_device *td);
int dm_thin_get_highest_mapped_block(struct dm_thin_device *td,
dm_block_t *highest_mapped);