* [PATCH] iomap: Fix unsharing of an extent >2GB on a 32-bit machine
@ 2020-06-07 10:35 Matthew Wilcox
2020-06-08 6:20 ` Christoph Hellwig
2020-06-08 16:16 ` Darrick J. Wong
0 siblings, 2 replies; 3+ messages in thread
From: Matthew Wilcox @ 2020-06-07 10:35 UTC (permalink / raw)
To: Christoph Hellwig, Darrick J . Wong, linux-xfs, linux-fsdevel
Cc: Matthew Wilcox (Oracle)
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Widen the type used for counting the number of bytes unshared.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
fs/iomap/buffered-io.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index ae6c5e38f0e8..9f90d2394535 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -909,7 +909,7 @@ iomap_unshare_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
struct iomap *iomap, struct iomap *srcmap)
{
long status = 0;
- ssize_t written = 0;
+ loff_t written = 0;
/* don't bother with blocks that are not shared to start with */
if (!(iomap->flags & IOMAP_F_SHARED))
--
2.26.2
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] iomap: Fix unsharing of an extent >2GB on a 32-bit machine
2020-06-07 10:35 [PATCH] iomap: Fix unsharing of an extent >2GB on a 32-bit machine Matthew Wilcox
@ 2020-06-08 6:20 ` Christoph Hellwig
2020-06-08 16:16 ` Darrick J. Wong
1 sibling, 0 replies; 3+ messages in thread
From: Christoph Hellwig @ 2020-06-08 6:20 UTC (permalink / raw)
To: Matthew Wilcox
Cc: Christoph Hellwig, Darrick J . Wong, linux-xfs, linux-fsdevel
On Sun, Jun 07, 2020 at 03:35:36AM -0700, Matthew Wilcox wrote:
> From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
>
> Widen the type used for counting the number of bytes unshared.
Looks good, although at least for XFS we can't have that large
extents anyway:
Reviewed-by: Christoph Hellwig <hch@lst.de>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] iomap: Fix unsharing of an extent >2GB on a 32-bit machine
2020-06-07 10:35 [PATCH] iomap: Fix unsharing of an extent >2GB on a 32-bit machine Matthew Wilcox
2020-06-08 6:20 ` Christoph Hellwig
@ 2020-06-08 16:16 ` Darrick J. Wong
1 sibling, 0 replies; 3+ messages in thread
From: Darrick J. Wong @ 2020-06-08 16:16 UTC (permalink / raw)
To: Matthew Wilcox; +Cc: Christoph Hellwig, linux-xfs, linux-fsdevel
On Sun, Jun 07, 2020 at 03:35:36AM -0700, Matthew Wilcox wrote:
> From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
>
> Widen the type used for counting the number of bytes unshared.
>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Makes sense,
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
--D
> ---
> fs/iomap/buffered-io.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
> index ae6c5e38f0e8..9f90d2394535 100644
> --- a/fs/iomap/buffered-io.c
> +++ b/fs/iomap/buffered-io.c
> @@ -909,7 +909,7 @@ iomap_unshare_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
> struct iomap *iomap, struct iomap *srcmap)
> {
> long status = 0;
> - ssize_t written = 0;
> + loff_t written = 0;
>
> /* don't bother with blocks that are not shared to start with */
> if (!(iomap->flags & IOMAP_F_SHARED))
> --
> 2.26.2
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-06-07 10:35 [PATCH] iomap: Fix unsharing of an extent >2GB on a 32-bit machine Matthew Wilcox
2020-06-08 6:20 ` Christoph Hellwig
2020-06-08 16:16 ` Darrick J. Wong
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