On tue, 29 Mar 2011 14:48:05 +0900, Itaru Kitayama wrote:
> Hi Miao,
>
> On Sun, 27 Mar 2011 20:27:30 +0800
> Miao Xie wrote:
>
>> Changelog V1 -> V2:
>> - modify the explanation of the deadlock.
>> - clear __GFP_FS flag in the free space's page cache.
>
> I think this is also needed on top of
Hi Miao,
On Sun, 27 Mar 2011 20:27:30 +0800
Miao Xie wrote:
> Changelog V1 -> V2:
> - modify the explanation of the deadlock.
> - clear __GFP_FS flag in the free space's page cache.
I think this is also needed on top of your V5 patch to avoid a recursion. Could
you
review it and give your Sign
Excerpts from Miao Xie's message of 2011-03-27 08:27:30 -0400:
> Changelog V1 -> V2:
> - modify the explanation of the deadlock.
> - clear __GFP_FS flag in the free space's page cache.
>
> diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
> index a039065..57df380 100644
> ---
Changelog V1 -> V2:
- modify the explanation of the deadlock.
- clear __GFP_FS flag in the free space's page cache.
Using the GFP_HIGHUSER_MOVABLE flag to allocate the metadata's page may cause
deadlock.
Task1
open()
...
btrfs_search_slot()
...
btrfs_cow_block()
...
