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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-01 02:37:43 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-01 02:37:43 +0200 |
commit | 5f56886521d6ddd3648777fae44d82382dd8c87f (patch) | |
tree | aa0db6331cdb01c23f1884439840aadd31bbcca4 /kernel/kexec.c | |
parent | Merge tag 'md-3.10' of git://neil.brown.name/md (diff) | |
parent | Documentation/sysrq: fix inconstistent help message of sysrq key (diff) | |
download | linux-5f56886521d6ddd3648777fae44d82382dd8c87f.tar.xz linux-5f56886521d6ddd3648777fae44d82382dd8c87f.zip |
Merge branch 'akpm' (incoming from Andrew)
Merge third batch of fixes from Andrew Morton:
"Most of the rest. I still have two large patchsets against AIO and
IPC, but they're a bit stuck behind other trees and I'm about to
vanish for six days.
- random fixlets
- inotify
- more of the MM queue
- show_stack() cleanups
- DMI update
- kthread/workqueue things
- compat cleanups
- epoll udpates
- binfmt updates
- nilfs2
- hfs
- hfsplus
- ptrace
- kmod
- coredump
- kexec
- rbtree
- pids
- pidns
- pps
- semaphore tweaks
- some w1 patches
- relay updates
- core Kconfig changes
- sysrq tweaks"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (109 commits)
Documentation/sysrq: fix inconstistent help message of sysrq key
ethernet/emac/sysrq: fix inconstistent help message of sysrq key
sparc/sysrq: fix inconstistent help message of sysrq key
powerpc/xmon/sysrq: fix inconstistent help message of sysrq key
ARM/etm/sysrq: fix inconstistent help message of sysrq key
power/sysrq: fix inconstistent help message of sysrq key
kgdb/sysrq: fix inconstistent help message of sysrq key
lib/decompress.c: fix initconst
notifier-error-inject: fix module names in Kconfig
kernel/sys.c: make prctl(PR_SET_MM) generally available
UAPI: remove empty Kbuild files
menuconfig: print more info for symbol without prompts
init/Kconfig: re-order CONFIG_EXPERT options to fix menuconfig display
kconfig menu: move Virtualization drivers near other virtualization options
Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
relay: use macro PAGE_ALIGN instead of FIX_SIZE
kernel/relay.c: move FIX_SIZE macro into relay.c
kernel/relay.c: remove unused function argument actor
drivers/w1/slaves/w1_ds2760.c: fix the error handling in w1_ds2760_add_slave()
drivers/w1/slaves/w1_ds2781.c: fix the error handling in w1_ds2781_add_slave()
...
Diffstat (limited to 'kernel/kexec.c')
-rw-r--r-- | kernel/kexec.c | 30 |
1 files changed, 11 insertions, 19 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c index b574920cbd4b..59f7b55ba745 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -786,7 +786,7 @@ static int kimage_load_normal_segment(struct kimage *image, struct kexec_segment *segment) { unsigned long maddr; - unsigned long ubytes, mbytes; + size_t ubytes, mbytes; int result; unsigned char __user *buf; @@ -819,13 +819,9 @@ static int kimage_load_normal_segment(struct kimage *image, /* Start with a clear page */ clear_page(ptr); ptr += maddr & ~PAGE_MASK; - mchunk = PAGE_SIZE - (maddr & ~PAGE_MASK); - if (mchunk > mbytes) - mchunk = mbytes; - - uchunk = mchunk; - if (uchunk > ubytes) - uchunk = ubytes; + mchunk = min_t(size_t, mbytes, + PAGE_SIZE - (maddr & ~PAGE_MASK)); + uchunk = min(ubytes, mchunk); result = copy_from_user(ptr, buf, uchunk); kunmap(page); @@ -850,7 +846,7 @@ static int kimage_load_crash_segment(struct kimage *image, * We do things a page at a time for the sake of kmap. */ unsigned long maddr; - unsigned long ubytes, mbytes; + size_t ubytes, mbytes; int result; unsigned char __user *buf; @@ -871,13 +867,10 @@ static int kimage_load_crash_segment(struct kimage *image, } ptr = kmap(page); ptr += maddr & ~PAGE_MASK; - mchunk = PAGE_SIZE - (maddr & ~PAGE_MASK); - if (mchunk > mbytes) - mchunk = mbytes; - - uchunk = mchunk; - if (uchunk > ubytes) { - uchunk = ubytes; + mchunk = min_t(size_t, mbytes, + PAGE_SIZE - (maddr & ~PAGE_MASK)); + uchunk = min(ubytes, mchunk); + if (mchunk > uchunk) { /* Zero the trailing part of the page */ memset(ptr + uchunk, 0, mchunk - uchunk); } @@ -1540,14 +1533,13 @@ void vmcoreinfo_append_str(const char *fmt, ...) { va_list args; char buf[0x50]; - int r; + size_t r; va_start(args, fmt); r = vsnprintf(buf, sizeof(buf), fmt, args); va_end(args); - if (r + vmcoreinfo_size > vmcoreinfo_max_size) - r = vmcoreinfo_max_size - vmcoreinfo_size; + r = min(r, vmcoreinfo_max_size - vmcoreinfo_size); memcpy(&vmcoreinfo_data[vmcoreinfo_size], buf, r); |