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Red Hat Bugzilla – Attachment 159608 Details for
Bug 248954
Oracle ASM DBWR process goes into 100% CPU spin when using hugepages on ia64
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[patch]
tested patch that resolves the hugepages spin
linux-2.6.9-bio-dirty-hugepage.patch (text/plain), 429 bytes, created by
John Sobecki
on 2007-07-19 20:25:07 UTC
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Description:
tested patch that resolves the hugepages spin
Filename:
MIME Type:
Creator:
John Sobecki
Created:
2007-07-19 20:25:07 UTC
Size:
429 bytes
patch
obsolete
>--- linux-2.6.9/fs/bio.c.orig 2007-07-18 07:43:12.000000000 -0600 >+++ linux-2.6.9/fs/bio.c 2007-07-18 07:51:07.000000000 -0600 >@@ -636,7 +636,8 @@ > * make sure we dirty pages we wrote to > */ > __bio_for_each_segment(bvec, bio, i, 0) { >- if (bio_data_dir(bio) == READ) >+ if ((bio_data_dir(bio) == READ) && >+ !PageCompound(bvec->bv_page)) > set_page_dirty_lock(bvec->bv_page); > > page_cache_release(bvec->bv_page);
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