> invalidate_inode_pages2() has other callers. I suspect with this
change
> we'll end up leaking EIOCBRETRY back to userspace.
EIOCBRETRY is used and caught already in do_sync_read() and
do_sync_readv_writev().
Below fixed patch against kernel 2.6.20.
>From Leonid Ananiev
Fix kernel bug when IO page is temporally busy:
invalidate_inode_pages2() returns EIOCBRETRY but not EIO..
Signed-off-by: Leonid Ananiev <[email protected]>
---
--- linux-2.6.20/mm/truncate.c 2007-02-04 10:44:54.000000000 -0800
+++ linux-2.6.20p/mm/truncate.c 2007-02-08 11:38:11.000000000 -0800
@@ -366,7 +366,7 @@ static int do_launder_page(struct addres
* Any pages which are found to be mapped into pagetables are unmapped
prior to
* invalidation.
*
- * Returns -EIO if any pages could not be invalidated.
+ * Returns -EIOCBRETRY if any pages could not be invalidated.
*/
int invalidate_inode_pages2_range(struct address_space *mapping,
pgoff_t start, pgoff_t end)
@@ -423,7 +423,7 @@ int invalidate_inode_pages2_range(struct
}
ret = do_launder_page(mapping, page);
if (ret == 0 &&
!invalidate_complete_page2(mapping, page))
- ret = -EIO;
+ ret = -EIOCBRETRY;
unlock_page(page);
}
pagevec_release(&pvec);
@@ -440,7 +440,7 @@ EXPORT_SYMBOL_GPL(invalidate_inode_pages
* Any pages which are found to be mapped into pagetables are unmapped
prior to
* invalidation.
*
- * Returns -EIO if any pages could not be invalidated.
+ * Returns -EIOCBRETRY if any pages could not be invalidated.
*/
int invalidate_inode_pages2(struct address_space *mapping)
{
-
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