diff options
Diffstat (limited to 'kernel/power/snapshot.c')
| -rw-r--r-- | kernel/power/snapshot.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 5c96ff067c64..405eddbda4fc 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -58,22 +58,24 @@ static inline void hibernate_restore_protection_end(void) hibernate_restore_protection_active = false; } -static inline void hibernate_restore_protect_page(void *page_address) +static inline int __must_check hibernate_restore_protect_page(void *page_address) { if (hibernate_restore_protection_active) - set_memory_ro((unsigned long)page_address, 1); + return set_memory_ro((unsigned long)page_address, 1); + return 0; } -static inline void hibernate_restore_unprotect_page(void *page_address) +static inline int hibernate_restore_unprotect_page(void *page_address) { if (hibernate_restore_protection_active) - set_memory_rw((unsigned long)page_address, 1); + return set_memory_rw((unsigned long)page_address, 1); + return 0; } #else static inline void hibernate_restore_protection_begin(void) {} static inline void hibernate_restore_protection_end(void) {} -static inline void hibernate_restore_protect_page(void *page_address) {} -static inline void hibernate_restore_unprotect_page(void *page_address) {} +static inline int __must_check hibernate_restore_protect_page(void *page_address) {return 0; } +static inline int hibernate_restore_unprotect_page(void *page_address) {return 0; } #endif /* CONFIG_STRICT_KERNEL_RWX && CONFIG_ARCH_HAS_SET_MEMORY */ @@ -2832,7 +2834,9 @@ next: } } else { copy_last_highmem_page(); - hibernate_restore_protect_page(handle->buffer); + error = hibernate_restore_protect_page(handle->buffer); + if (error) + return error; handle->buffer = get_buffer(&orig_bm, &ca); if (IS_ERR(handle->buffer)) return PTR_ERR(handle->buffer); @@ -2858,15 +2862,18 @@ next: * stored in highmem. Additionally, it recycles bitmap memory that's not * necessary any more. */ -void snapshot_write_finalize(struct snapshot_handle *handle) +int snapshot_write_finalize(struct snapshot_handle *handle) { + int error; + copy_last_highmem_page(); - hibernate_restore_protect_page(handle->buffer); + error = hibernate_restore_protect_page(handle->buffer); /* Do that only if we have loaded the image entirely */ if (handle->cur > 1 && handle->cur > nr_meta_pages + nr_copy_pages + nr_zero_pages) { memory_bm_recycle(&orig_bm); free_highmem_data(); } + return error; } int snapshot_image_loaded(struct snapshot_handle *handle) |