Messages in this thread Patch in this message | | | Date | Sat, 01 Mar 2008 20:30:59 +0100 | From | Milan Broz <> | Subject | Re: [dm-devel] Re: 2.6.24 Kernel Soft Lock Up with heavy I/O in dm-crypt |
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Ritesh Raj Sarraf wrote:
> 1) Initialize a device using dm-crypt and LUKS > 2) Create a filesystem on top of it and mount it. > 3) Write huge amount of data (as a normal user). Something like 150GB. > > As the load goes hight (to something like 12-14), the kernel lock-up is logged > into dmesg. > At that moment, the OS is barely responsive. > > Please could you try to reproduce it with this patch applied? (patch for 2.6.25-rc3, for 2.6.24 will follow - code changed here)
Milan mbroz@redhat.com --
Add cond_resched() to prevent stuck in big bio processing.
Signed-off-by: Milan Broz <mbroz@redhat.com> --- drivers/md/dm-crypt.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index b04f98d..2032228 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -432,6 +432,7 @@ static int crypt_convert(struct crypt_config *cc, /* fall through*/ case 0: ctx->sector++; + cond_resched(); continue; }
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