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Diffstat (limited to 'arch/ia64/kernel/sys_ia64.c')
-rw-r--r--arch/ia64/kernel/sys_ia64.c143
1 files changed, 20 insertions, 123 deletions
diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c
index 1eda194b955..41e33f84c18 100644
--- a/arch/ia64/kernel/sys_ia64.c
+++ b/arch/ia64/kernel/sys_ia64.c
@@ -25,9 +25,9 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len
unsigned long pgoff, unsigned long flags)
{
long map_shared = (flags & MAP_SHARED);
- unsigned long start_addr, align_mask = PAGE_SIZE - 1;
+ unsigned long align_mask = 0;
struct mm_struct *mm = current->mm;
- struct vm_area_struct *vma;
+ struct vm_unmapped_area_info info;
if (len > RGN_MAP_LIMIT)
return -ENOMEM;
@@ -44,7 +44,7 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len
addr = 0;
#endif
if (!addr)
- addr = mm->free_area_cache;
+ addr = TASK_UNMAPPED_BASE;
if (map_shared && (TASK_SIZE > 0xfffffffful))
/*
@@ -53,28 +53,15 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len
* tasks, we prefer to avoid exhausting the address space too quickly by
* limiting alignment to a single page.
*/
- align_mask = SHMLBA - 1;
-
- full_search:
- start_addr = addr = (addr + align_mask) & ~align_mask;
-
- for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
- /* At this point: (!vma || addr < vma->vm_end). */
- if (TASK_SIZE - len < addr || RGN_MAP_LIMIT - len < REGION_OFFSET(addr)) {
- if (start_addr != TASK_UNMAPPED_BASE) {
- /* Start a new search --- just in case we missed some holes. */
- addr = TASK_UNMAPPED_BASE;
- goto full_search;
- }
- return -ENOMEM;
- }
- if (!vma || addr + len <= vma->vm_start) {
- /* Remember the address where we stopped this search: */
- mm->free_area_cache = addr + len;
- return addr;
- }
- addr = (vma->vm_end + align_mask) & ~align_mask;
- }
+ align_mask = PAGE_MASK & (SHMLBA - 1);
+
+ info.flags = 0;
+ info.length = len;
+ info.low_limit = addr;
+ info.high_limit = TASK_SIZE;
+ info.align_mask = align_mask;
+ info.align_offset = 0;
+ return vm_unmapped_area(&info);
}
asmlinkage long
@@ -100,51 +87,7 @@ sys_getpagesize (void)
asmlinkage unsigned long
ia64_brk (unsigned long brk)
{
- unsigned long rlim, retval, newbrk, oldbrk;
- struct mm_struct *mm = current->mm;
-
- /*
- * Most of this replicates the code in sys_brk() except for an additional safety
- * check and the clearing of r8. However, we can't call sys_brk() because we need
- * to acquire the mmap_sem before we can do the test...
- */
- down_write(&mm->mmap_sem);
-
- if (brk < mm->end_code)
- goto out;
- newbrk = PAGE_ALIGN(brk);
- oldbrk = PAGE_ALIGN(mm->brk);
- if (oldbrk == newbrk)
- goto set_brk;
-
- /* Always allow shrinking brk. */
- if (brk <= mm->brk) {
- if (!do_munmap(mm, newbrk, oldbrk-newbrk))
- goto set_brk;
- goto out;
- }
-
- /* Check against unimplemented/unmapped addresses: */
- if ((newbrk - oldbrk) > RGN_MAP_LIMIT || REGION_OFFSET(newbrk) > RGN_MAP_LIMIT)
- goto out;
-
- /* Check against rlimit.. */
- rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
- if (rlim < RLIM_INFINITY && brk - mm->start_data > rlim)
- goto out;
-
- /* Check against existing mmap mappings. */
- if (find_vma_intersection(mm, oldbrk, newbrk+PAGE_SIZE))
- goto out;
-
- /* Ok, looks good - let it rip. */
- if (do_brk(oldbrk, newbrk-oldbrk) != oldbrk)
- goto out;
-set_brk:
- mm->brk = brk;
-out:
- retval = mm->brk;
- up_write(&mm->mmap_sem);
+ unsigned long retval = sys_brk(brk);
force_successful_syscall_return();
return retval;
}
@@ -154,13 +97,13 @@ out:
* and r9) as this is faster than doing a copy_to_user().
*/
asmlinkage long
-sys_pipe (void)
+sys_ia64_pipe (void)
{
struct pt_regs *regs = task_pt_regs(current);
int fd[2];
int retval;
- retval = do_pipe(fd);
+ retval = do_pipe_flags(fd, 0);
if (retval)
goto out;
retval = fd[0];
@@ -185,39 +128,6 @@ int ia64_mmap_check(unsigned long addr, unsigned long len,
return 0;
}
-static inline unsigned long
-do_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, unsigned long pgoff)
-{
- struct file *file = NULL;
-
- flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
- if (!(flags & MAP_ANONYMOUS)) {
- file = fget(fd);
- if (!file)
- return -EBADF;
-
- if (!file->f_op || !file->f_op->mmap) {
- addr = -ENODEV;
- goto out;
- }
- }
-
- /* Careful about overflows.. */
- len = PAGE_ALIGN(len);
- if (!len || len > TASK_SIZE) {
- addr = -EINVAL;
- goto out;
- }
-
- down_write(&current->mm->mmap_sem);
- addr = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
- up_write(&current->mm->mmap_sem);
-
-out: if (file)
- fput(file);
- return addr;
-}
-
/*
* mmap2() is like mmap() except that the offset is expressed in units
* of PAGE_SIZE (instead of bytes). This allows to mmap2() (pieces
@@ -226,7 +136,7 @@ out: if (file)
asmlinkage unsigned long
sys_mmap2 (unsigned long addr, unsigned long len, int prot, int flags, int fd, long pgoff)
{
- addr = do_mmap2(addr, len, prot, flags, fd, pgoff);
+ addr = sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff);
if (!IS_ERR((void *) addr))
force_successful_syscall_return();
return addr;
@@ -238,7 +148,7 @@ sys_mmap (unsigned long addr, unsigned long len, int prot, int flags, int fd, lo
if (offset_in_page(off) != 0)
return -EINVAL;
- addr = do_mmap2(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
+ addr = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
if (!IS_ERR((void *) addr))
force_successful_syscall_return();
return addr;
@@ -248,22 +158,9 @@ asmlinkage unsigned long
ia64_mremap (unsigned long addr, unsigned long old_len, unsigned long new_len, unsigned long flags,
unsigned long new_addr)
{
- extern unsigned long do_mremap (unsigned long addr,
- unsigned long old_len,
- unsigned long new_len,
- unsigned long flags,
- unsigned long new_addr);
-
- down_write(&current->mm->mmap_sem);
- {
- addr = do_mremap(addr, old_len, new_len, flags, new_addr);
- }
- up_write(&current->mm->mmap_sem);
-
- if (IS_ERR((void *) addr))
- return addr;
-
- force_successful_syscall_return();
+ addr = sys_mremap(addr, old_len, new_len, flags, new_addr);
+ if (!IS_ERR((void *) addr))
+ force_successful_syscall_return();
return addr;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 06:30:53 +0000