lk/linux-kernel-test
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Merge branch 'x86/core' into core/percpu

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This commit is contained in:
Ingo Molnar
2009-03-04 02:29:19 +01:00
parent 9976b39b50 8b0e5860cb
commit 91d75e209b
373 changed files with 14129 additions and 3200 deletions
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7
mm/filemap.c
View File

@ -1823,7 +1823,7 @@ static size_t __iovec_copy_from_user_inatomic(char *vaddr,
int copy = min(bytes, iov->iov_len - base);
base = 0;
left = __copy_from_user_inatomic_nocache(vaddr, buf, copy);
left = __copy_from_user_inatomic(vaddr, buf, copy);
copied += copy;
bytes -= copy;
vaddr += copy;
@ -1851,8 +1851,7 @@ size_t iov_iter_copy_from_user_atomic(struct page *page,
if (likely(i->nr_segs == 1)) {
int left;
char __user *buf = i->iov->iov_base + i->iov_offset;
left = __copy_from_user_inatomic_nocache(kaddr + offset,
buf, bytes);
left = __copy_from_user_inatomic(kaddr + offset, buf, bytes);
copied = bytes - left;
} else {
copied = __iovec_copy_from_user_inatomic(kaddr + offset,
@ -1880,7 +1879,7 @@ size_t iov_iter_copy_from_user(struct page *page,
if (likely(i->nr_segs == 1)) {
int left;
char __user *buf = i->iov->iov_base + i->iov_offset;
left = __copy_from_user_nocache(kaddr + offset, buf, bytes);
left = __copy_from_user(kaddr + offset, buf, bytes);
copied = bytes - left;
} else {
copied = __iovec_copy_from_user_inatomic(kaddr + offset,

43
mm/shmem.c
View File

@ -169,13 +169,13 @@ static inline struct shmem_sb_info *SHMEM_SB(struct super_block *sb)
*/
static inline int shmem_acct_size(unsigned long flags, loff_t size)
{
return (flags & VM_ACCOUNT) ?
security_vm_enough_memory_kern(VM_ACCT(size)) : 0;
return (flags & VM_NORESERVE) ?
0 : security_vm_enough_memory_kern(VM_ACCT(size));
}
static inline void shmem_unacct_size(unsigned long flags, loff_t size)
{
if (flags & VM_ACCOUNT)
if (!(flags & VM_NORESERVE))
vm_unacct_memory(VM_ACCT(size));
}
@ -187,13 +187,13 @@ static inline void shmem_unacct_size(unsigned long flags, loff_t size)
*/
static inline int shmem_acct_block(unsigned long flags)
{
return (flags & VM_ACCOUNT) ?
0 : security_vm_enough_memory_kern(VM_ACCT(PAGE_CACHE_SIZE));
return (flags & VM_NORESERVE) ?
security_vm_enough_memory_kern(VM_ACCT(PAGE_CACHE_SIZE)) : 0;
}
static inline void shmem_unacct_blocks(unsigned long flags, long pages)
{
if (!(flags & VM_ACCOUNT))
if (flags & VM_NORESERVE)
vm_unacct_memory(pages * VM_ACCT(PAGE_CACHE_SIZE));
}
@ -1515,8 +1515,8 @@ static int shmem_mmap(struct file *file, struct vm_area_struct *vma)
return 0;
}
static struct inode *
shmem_get_inode(struct super_block *sb, int mode, dev_t dev)
static struct inode *shmem_get_inode(struct super_block *sb, int mode,
dev_t dev, unsigned long flags)
{
struct inode *inode;
struct shmem_inode_info *info;
@ -1537,6 +1537,7 @@ shmem_get_inode(struct super_block *sb, int mode, dev_t dev)
info = SHMEM_I(inode);
memset(info, 0, (char *)inode - (char *)info);
spin_lock_init(&info->lock);
info->flags = flags & VM_NORESERVE;
INIT_LIST_HEAD(&info->swaplist);
switch (mode & S_IFMT) {
@ -1779,9 +1780,10 @@ static int shmem_statfs(struct dentry *dentry, struct kstatfs *buf)
static int
shmem_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
{
struct inode *inode = shmem_get_inode(dir->i_sb, mode, dev);
struct inode *inode;
int error = -ENOSPC;
inode = shmem_get_inode(dir->i_sb, mode, dev, VM_NORESERVE);
if (inode) {
error = security_inode_init_security(inode, dir, NULL, NULL,
NULL);
@ -1920,7 +1922,7 @@ static int shmem_symlink(struct inode *dir, struct dentry *dentry, const char *s
if (len > PAGE_CACHE_SIZE)
return -ENAMETOOLONG;
inode = shmem_get_inode(dir->i_sb, S_IFLNK|S_IRWXUGO, 0);
inode = shmem_get_inode(dir->i_sb, S_IFLNK|S_IRWXUGO, 0, VM_NORESERVE);
if (!inode)
return -ENOSPC;
@ -2332,7 +2334,7 @@ static int shmem_fill_super(struct super_block *sb,
sb->s_flags |= MS_POSIXACL;
#endif
inode = shmem_get_inode(sb, S_IFDIR | sbinfo->mode, 0);
inode = shmem_get_inode(sb, S_IFDIR | sbinfo->mode, 0, VM_NORESERVE);
if (!inode)
goto failed;
inode->i_uid = sbinfo->uid;
@ -2574,12 +2576,12 @@ int shmem_unuse(swp_entry_t entry, struct page *page)
return 0;
}
#define shmem_file_operations ramfs_file_operations
#define shmem_vm_ops generic_file_vm_ops
#define shmem_get_inode ramfs_get_inode
#define shmem_acct_size(a, b) 0
#define shmem_unacct_size(a, b) do {} while (0)
#define SHMEM_MAX_BYTES LLONG_MAX
#define shmem_vm_ops generic_file_vm_ops
#define shmem_file_operations ramfs_file_operations
#define shmem_get_inode(sb, mode, dev, flags) ramfs_get_inode(sb, mode, dev)
#define shmem_acct_size(flags, size) 0
#define shmem_unacct_size(flags, size) do {} while (0)
#define SHMEM_MAX_BYTES LLONG_MAX
#endif /* CONFIG_SHMEM */
@ -2589,7 +2591,7 @@ int shmem_unuse(swp_entry_t entry, struct page *page)
* shmem_file_setup - get an unlinked file living in tmpfs
* @name: name for dentry (to be seen in /proc/<pid>/maps
* @size: size to be set for the file
* @flags: vm_flags
* @flags: VM_NORESERVE suppresses pre-accounting of the entire object size
*/
struct file *shmem_file_setup(char *name, loff_t size, unsigned long flags)
{
@ -2623,13 +2625,10 @@ struct file *shmem_file_setup(char *name, loff_t size, unsigned long flags)
goto put_dentry;
error = -ENOSPC;
inode = shmem_get_inode(root->d_sb, S_IFREG | S_IRWXUGO, 0);
inode = shmem_get_inode(root->d_sb, S_IFREG | S_IRWXUGO, 0, flags);
if (!inode)
goto close_file;
#ifdef CONFIG_SHMEM
SHMEM_I(inode)->flags = (flags & VM_NORESERVE) ? 0 : VM_ACCOUNT;
#endif
d_instantiate(dentry, inode);
inode->i_size = size;
inode->i_nlink = 0; /* It is unlinked */

13
mm/vmalloc.c
View File

@ -333,6 +333,7 @@ static struct vmap_area *alloc_vmap_area(unsigned long size,
unsigned long addr;
int purged = 0;
BUG_ON(!size);
BUG_ON(size & ~PAGE_MASK);
va = kmalloc_node(sizeof(struct vmap_area),
@ -344,6 +345,9 @@ retry:
addr = ALIGN(vstart, align);
spin_lock(&vmap_area_lock);
if (addr + size - 1 < addr)
goto overflow;
/* XXX: could have a last_hole cache */
n = vmap_area_root.rb_node;
if (n) {
@ -375,6 +379,8 @@ retry:
while (addr + size > first->va_start && addr + size <= vend) {
addr = ALIGN(first->va_end + PAGE_SIZE, align);
if (addr + size - 1 < addr)
goto overflow;
n = rb_next(&first->rb_node);
if (n)
@ -385,6 +391,7 @@ retry:
}
found:
if (addr + size > vend) {
overflow:
spin_unlock(&vmap_area_lock);
if (!purged) {
purge_vmap_area_lazy();
@ -508,6 +515,7 @@ static void __purge_vmap_area_lazy(unsigned long *start, unsigned long *end,
static DEFINE_SPINLOCK(purge_lock);
LIST_HEAD(valist);
struct vmap_area *va;
struct vmap_area *n_va;
int nr = 0;
/*
@ -547,7 +555,7 @@ static void __purge_vmap_area_lazy(unsigned long *start, unsigned long *end,
if (nr) {
spin_lock(&vmap_area_lock);
list_for_each_entry(va, &valist, purge_list)
list_for_each_entry_safe(va, n_va, &valist, purge_list)
__free_vmap_area(va);
spin_unlock(&vmap_area_lock);
}
@ -1347,6 +1355,7 @@ EXPORT_SYMBOL(vfree);
void vunmap(const void *addr)
{
BUG_ON(in_interrupt());
might_sleep();
__vunmap(addr, 0);
}
EXPORT_SYMBOL(vunmap);
@ -1366,6 +1375,8 @@ void *vmap(struct page **pages, unsigned int count,
{
struct vm_struct *area;
might_sleep();
if (count > num_physpages)
return NULL;