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Merge branch 'master' into next

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This commit is contained in:
James Morris
2009-03-24 10:52:46 +11:00
parent df7f54c012 8e0ee43bc2
commit 703a3cd728
1409 changed files with 58126 additions and 39826 deletions
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mm/shmem.c
+21 -22
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@@ -170,13 +170,13 @@ 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));
}
@@ -188,13 +188,13 @@ 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));
}
@@ -1516,8 +1516,8 @@ 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;
@@ -1538,6 +1538,7 @@ 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) {
@@ -1780,9 +1781,10 @@ 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);
@@ -1921,7 +1923,7 @@ 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;
@@ -2333,7 +2335,7 @@ 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;
@@ -2575,12 +2577,12 @@ 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 */
@@ -2590,7 +2592,7 @@ 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)
{
@@ -2624,13 +2626,10 @@ 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 */