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| author | Jiri Slaby <jirislaby@gmail.com> | 2009-10-07 22:37:35 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2009-11-03 11:01:46 +0100 |
| commit | 76b57e613f6006ff525a17876c89326d127cadc9 (patch) | |
| tree | 244d876f24581fb40d1900003c55b1c7ca5abb91 /kernel/power/swap.c | |
| parent | 9905d1b411946fb3fb228e8c6529fd94afda8a92 (diff) | |
| download | linux-stable-76b57e613f6006ff525a17876c89326d127cadc9.tar.gz linux-stable-76b57e613f6006ff525a17876c89326d127cadc9.tar.bz2 linux-stable-76b57e613f6006ff525a17876c89326d127cadc9.zip | |
PM / Hibernate: Fix blkdev refleaks
While cruising through the swsusp code I found few blkdev reference
leaks of resume_bdev.
swsusp_read: remove blkdev_put altogether. Some fail paths do
not do that.
swsusp_check: make sure we always put a reference on fail paths
software_resume: all fail paths between swsusp_check and swsusp_read
omit swsusp_close. Add it in those cases. And since
swsusp_read doesn't drop the reference anymore, do
it here unconditionally.
[rjw: Fixed a small coding style issue.]
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'kernel/power/swap.c')
| -rw-r--r-- | kernel/power/swap.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/power/swap.c b/kernel/power/swap.c index b101cdc4df3f..a4388624ed98 100644 --- a/kernel/power/swap.c +++ b/kernel/power/swap.c @@ -572,8 +572,6 @@ int swsusp_read(unsigned int *flags_p) error = load_image(&handle, &snapshot, header->pages - 1); release_swap_reader(&handle); - blkdev_put(resume_bdev, FMODE_READ); - if (!error) pr_debug("PM: Image successfully loaded\n"); else @@ -596,7 +594,7 @@ int swsusp_check(void) error = bio_read_page(swsusp_resume_block, swsusp_header, NULL); if (error) - return error; + goto put; if (!memcmp(SWSUSP_SIG, swsusp_header->sig, 10)) { memcpy(swsusp_header->sig, swsusp_header->orig_sig, 10); @@ -604,8 +602,10 @@ int swsusp_check(void) error = bio_write_page(swsusp_resume_block, swsusp_header, NULL); } else { - return -EINVAL; + error = -EINVAL; } + +put: if (error) blkdev_put(resume_bdev, FMODE_READ); else |