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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-02 21:59:36 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-02 21:59:36 +0200 |
| commit | 7db83c070bd29e73c8bb42d4b48c976be76f1dbe (patch) | |
| tree | 463129a0ebe1812b7c699fa5911238389005dae1 /fs/block_dev.c | |
| parent | Merge tag 'iomap-5.7-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux (diff) | |
| parent | hibernate: Allow uswsusp to write to swap (diff) | |
| download | linux-7db83c070bd29e73c8bb42d4b48c976be76f1dbe.tar.xz linux-7db83c070bd29e73c8bb42d4b48c976be76f1dbe.zip | |
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
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 4 |
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)) |