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authorRafael J. Wysocki <rjw@sisk.pl>2007-01-05 16:36:28 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2007-01-05 23:55:22 -0800
commit7bf236874292fd073c6bdd27f89c3d9e81a79cbc (patch)
tree27e4196e4b720c113010d544567f76f181c11428 /kernel/power
parent3223ea8cca5936b8e78450dd5b8ba88372e9c0a8 (diff)
downloadblackbird-op-linux-7bf236874292fd073c6bdd27f89c3d9e81a79cbc.tar.gz
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[PATCH] swsusp: Do not fail if resume device is not set
In the kernels later than 2.6.19 there is a regression that makes swsusp fail if the resume device is not explicitly specified. It can be fixed by adding an additional parameter to mm/swapfile.c:swap_type_of() allowing us to pass the (struct block_device *) corresponding to the first available swap back to the caller. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/power')
-rw-r--r--kernel/power/swap.c9
-rw-r--r--kernel/power/user.c7
2 files changed, 9 insertions, 7 deletions
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index f133d4a6d817..3581f8f86acd 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -165,14 +165,15 @@ static int swsusp_swap_check(void) /* This is called before saving image */
{
int res;
- res = swap_type_of(swsusp_resume_device, swsusp_resume_block);
+ res = swap_type_of(swsusp_resume_device, swsusp_resume_block,
+ &resume_bdev);
if (res < 0)
return res;
root_swap = res;
- resume_bdev = open_by_devnum(swsusp_resume_device, FMODE_WRITE);
- if (IS_ERR(resume_bdev))
- return PTR_ERR(resume_bdev);
+ res = blkdev_get(resume_bdev, FMODE_WRITE, O_RDWR);
+ if (res)
+ return res;
res = set_blocksize(resume_bdev, PAGE_SIZE);
if (res < 0)
diff --git a/kernel/power/user.c b/kernel/power/user.c
index 89443b85163b..f7b7a785a5c6 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -57,7 +57,7 @@ static int snapshot_open(struct inode *inode, struct file *filp)
memset(&data->handle, 0, sizeof(struct snapshot_handle));
if ((filp->f_flags & O_ACCMODE) == O_RDONLY) {
data->swap = swsusp_resume_device ?
- swap_type_of(swsusp_resume_device, 0) : -1;
+ swap_type_of(swsusp_resume_device, 0, NULL) : -1;
data->mode = O_RDONLY;
} else {
data->swap = -1;
@@ -268,7 +268,8 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp,
* so we need to recode them
*/
if (old_decode_dev(arg)) {
- data->swap = swap_type_of(old_decode_dev(arg), 0);
+ data->swap = swap_type_of(old_decode_dev(arg),
+ 0, NULL);
if (data->swap < 0)
error = -ENODEV;
} else {
@@ -365,7 +366,7 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp,
swdev = old_decode_dev(swap_area.dev);
if (swdev) {
offset = swap_area.offset;
- data->swap = swap_type_of(swdev, offset);
+ data->swap = swap_type_of(swdev, offset, NULL);
if (data->swap < 0)
error = -ENODEV;
} else {
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