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[PATCH] invalidate_inode_pages2_range() debug

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A failure in invalidate_inode_pages2_range() can result in unpleasant things
happening in NFS (at least).  Stick a WARN_ON_ONCE() in there so we can find
out if it happens, and maybe why.

(akpm: might be a -mm-only patch, we'll see..)

Cc: Chuck Lever <[email protected]>
Cc: Trond Myklebust <[email protected]>
Cc: Steve Dickson <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Andrew Morton 2006-10-11 01:21:53 -07:00 • committed by Linus Torvalds
commit 8258d4a574
1 changed files with 1 additions and 0 deletions
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1
mm/truncate.c
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@ -396,6 +396,7 @@ int invalidate_inode_pages2_range(struct address_space *mapping,
pagevec_release(&pvec);
cond_resched();
}
WARN_ON_ONCE(ret);
return ret;
}
EXPORT_SYMBOL_GPL(invalidate_inode_pages2_range);