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New code for 5.8: 

- Fix an integer overflow problem in the unshare actor.
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Merge tag 'iomap-5.8-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull iomap fix from Darrick Wong:
 "A single iomap bug fix for a variable type mistake on 32-bit
  architectures, fixing an integer overflow problem in the unshare
  actor"

* tag 'iomap-5.8-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  iomap: Fix unsharing of an extent >2GB on a 32-bit machine
This commit is contained in:
Linus Torvalds 2020-06-13 12:44:30 -07:00
parent c555722768 d4ff3b2ef9
commit 593bd5e5d3
1 changed files with 1 additions and 1 deletions
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2
fs/iomap/buffered-io.c
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@ -870,7 +870,7 @@ iomap_unshare_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
struct iomap *iomap, struct iomap *srcmap) struct iomap *iomap, struct iomap *srcmap)
{ {
long status = 0; long status = 0;
ssize_t written = 0; loff_t written = 0;
/* don't bother with blocks that are not shared to start with */ /* don't bother with blocks that are not shared to start with */
if (!(iomap->flags & IOMAP_F_SHARED)) if (!(iomap->flags & IOMAP_F_SHARED))