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Benny Halevy dfe195fb79 mm: fix uninitialized variables for find_vma_prepare callers ... gcc 4.3.0 correctly emits the following warnings. When a vma covering addr is found, find_vma_prepare indeed returns without setting pprev, rb_link, and rb_parent. mm/mmap.c: In function `insert_vm_struct': mm/mmap.c:2085: warning: `rb_parent' may be used uninitialized in this function mm/mmap.c:2085: warning: `rb_link' may be used uninitialized in this function mm/mmap.c:2084: warning: `prev' may be used uninitialized in this function mm/mmap.c: In function `copy_vma': mm/mmap.c:2124: warning: `rb_parent' may be used uninitialized in this function mm/mmap.c:2124: warning: `rb_link' may be used uninitialized in this function mm/mmap.c:2123: warning: `prev' may be used uninitialized in this function mm/mmap.c: In function `do_brk': mm/mmap.c:1951: warning: `rb_parent' may be used uninitialized in this function mm/mmap.c:1951: warning: `rb_link' may be used uninitialized in this function mm/mmap.c:1949: warning: `prev' may be used uninitialized in this function mm/mmap.c: In function `mmap_region': mm/mmap.c:1092: warning: `rb_parent' may be used uninitialized in this function mm/mmap.c:1092: warning: `rb_link' may be used uninitialized in this function mm/mmap.c:1089: warning: `prev' may be used uninitialized in this function Hugh adds: in fact, none of find_vma_prepare's callers use those values when a vma is found to be already covering addr, it's either an error or an occasion to munmap and repeat. Okay, let's quieten the compiler (but I would prefer it if pprev, rb_link and rb_parent were meaningful in that case, rather than whatever's in them from descending the tree). Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: "Ryan Hope" <rmh3093@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		17 years ago
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Kconfig	…
Makefile	…
allocpercpu.c	…
backing-dev.c	…
bootmem.c	…
bounce.c	…
dmapool.c	…
fadvise.c	…
filemap.c	mm: rename page trylock	17 years ago
filemap_xip.c	mmu-notifiers: core	17 years ago
fremap.c	…
highmem.c	highmem: Export totalhigh_pages.	17 years ago
hugetlb.c	mm/hugetlb: don't crash when HPAGE_SHIFT is 0	17 years ago
internal.h	…
maccess.c	…
madvise.c	…
memcontrol.c	…
memory.c	mm: rename page trylock	17 years ago
memory_hotplug.c	…
mempolicy.c	…
mempool.c	…
migrate.c	mm: rename page trylock	17 years ago
mincore.c	…
mlock.c	mlock() fix return values	17 years ago
mm_init.c	mm_init.c: avoid ifdef-inside-macro-expansion	17 years ago
mmap.c	mm: fix uninitialized variables for find_vma_prepare callers	17 years ago
mmu_notifier.c	…
mmzone.c	…
mprotect.c	…
mremap.c	…
msync.c	…
nommu.c	nommu: Provide vmalloc_exec().	17 years ago
oom_kill.c	…
page-writeback.c	…
page_alloc.c	…
page_io.c	…
page_isolation.c	…
pagewalk.c	…
pdflush.c	…
prio_tree.c	…
quicklist.c	…
readahead.c	…
rmap.c	mm: rename page trylock	17 years ago
shmem.c	mm: rename page trylock	17 years ago
shmem_acl.c	…
slab.c	…
slob.c	…
slub.c	…
sparse-vmemmap.c	…
sparse.c	…
swap.c	mm: rename page trylock	17 years ago
swap_state.c	mm: rename page trylock	17 years ago
swapfile.c	mm: rename page trylock	17 years ago
thrash.c	…
tiny-shmem.c	…
truncate.c	mm: rename page trylock	17 years ago
util.c	…
vmalloc.c	…
vmscan.c	mm: rename page trylock	17 years ago
vmstat.c	…