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authorLinus Torvalds <torvalds@linux-foundation.org>2020-04-02 12:59:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-04-02 12:59:36 -0700
commit7db83c070bd29e73c8bb42d4b48c976be76f1dbe (patch)
tree463129a0ebe1812b7c699fa5911238389005dae1
parent35a9fafe230bdefe3c37b06589bf622c857030c1 (diff)
parent56939e014a6c212b317414faa307029e2e80c3b9 (diff)
Merge tag 'vfs-5.7-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull hibernation fix from Darrick Wong: "Fix a regression where we broke the userspace hibernation driver by disallowing writes to the swap device" * tag 'vfs-5.7-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: hibernate: Allow uswsusp to write to swap
-rw-r--r--fs/block_dev.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 9501880dff5e..52b6f646cdbd 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -34,6 +34,7 @@
#include <linux/task_io_accounting_ops.h>
#include <linux/falloc.h>
#include <linux/uaccess.h>
+#include <linux/suspend.h>
#include "internal.h"
struct bdev_inode {
@@ -2013,7 +2014,8 @@ ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from)
if (bdev_read_only(I_BDEV(bd_inode)))
return -EPERM;
- if (IS_SWAPFILE(bd_inode))
+ /* uswsusp needs write permission to the swap */
+ if (IS_SWAPFILE(bd_inode) && !hibernation_available())
return -ETXTBSY;
if (!iov_iter_count(from))