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Date: Wed, 14 Feb 2007 20:51:33 +0300
From: "Ananiev, Leonid I" <leonid.i.ananiev@...el.com>
To: <akpm@...ux-foundation.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] aio: fix kernel bug when page is temporally busy
-wrap lines are fixed. Sorry.
>From Leonid Ananiev
Fix kernel bug if IO page is temporally busy:
invalidate_inode_pages2_range() returns EIOCBRETRY but not EIO.
invalidate_inode_pages2() returns EIO as earlier.
Signed-off-by: Leonid Ananiev <leonid.i.ananiev@...el.com>
---
--- 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 22:56:52.000000000 -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.
*This is path is modified so that invalidate_inode_pages2()
returns EIO as earlier.
Wrap lines are fixed
- From Leonid Ananiev
Fix kernel bug when IO page is temporally busy:
invalidate_inode_pages2_range() returns EIOCBRETRY but not EIO.
invalidate_inode_pages2() returns EIO as earlier.
Signed-off-by: Leonid Ananiev <leonid.i.ananiev@...el.com>
---
--- 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 22:56:52.000000000 -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);
@@ -444,6 +444,7 @@ EXPORT_SYMBOL_GPL(invalidate_inode_pages
*/
int invalidate_inode_pages2(struct address_space *mapping)
{
- return invalidate_inode_pages2_range(mapping, 0, -1);
+ int ret = invalidate_inode_pages2_range(mapping, 0, -1);
+ return (ret < 0)?-EIO:ret;
}
EXPORT_SYMBOL_GPL(invalidate_inode_pages2);
- * 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);
@@ -444,6 +444,7 @@ EXPORT_SYMBOL_GPL(invalidate_inode_pages
*/
int invalidate_inode_pages2(struct address_space *mapping)
{
- return invalidate_inode_pages2_range(mapping, 0, -1);
+ int ret = invalidate_inode_pages2_range(mapping, 0, -1);
+ return (ret < 0)?-EIO:ret;
}
EXPORT_SYMBOL_GPL(invalidate_inode_pages2);
-
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