Commit-ID: 57683f72b8c01c53c85fe13e82fe1feb3a06bcd5
Gitweb: http://git.kernel.org/tip/57683f72b8c01c53c85fe13e82fe1feb3a06bcd5
Author: Oleg Nesterov <oleg@xxxxxxxxxx>
AuthorDate: Sun, 29 Jul 2012 20:22:47 +0200
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 30 Jul 2012 11:27:25 +0200
uprobes: Rename vma_address() and make it return "unsigned long"
1. vma_address() returns loff_t, this looks confusing and this
is unnecessary after the previous change. Make it return "ulong",
all callers truncate the result anyway.
2. Its name conflicts with mm/rmap.c:vma_address(), rename it to
offset_to_vaddr(), this matches vaddr_to_offset().
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Acked-by: Srikar Dronamraju <srikar.vnet.ibm.com>
Cc: Anton Arapov <anton@xxxxxxxxxx>
Cc: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20120729182247.GA20365@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
kernel/events/uprobes.c | 15 +++++----------
1 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index cdc3c95..bb30a4f 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -112,14 +112,9 @@ static bool valid_vma(struct vm_area_struct *vma, bool is_register)
return false;
}
-static loff_t vma_address(struct vm_area_struct *vma, loff_t offset)
+static unsigned long offset_to_vaddr(struct vm_area_struct *vma, loff_t offset)
{
- loff_t vaddr;
-
- vaddr = vma->vm_start + offset;
- vaddr -= (loff_t)vma->vm_pgoff << PAGE_SHIFT;
-
- return vaddr;
+ return vma->vm_start + offset - ((loff_t)vma->vm_pgoff << PAGE_SHIFT);
}
static loff_t vaddr_to_offset(struct vm_area_struct *vma, unsigned long vaddr)
@@ -775,7 +770,7 @@ build_map_info(struct address_space *mapping, loff_t offset, bool is_register)
curr = info;
info->mm = vma->vm_mm;
- info->vaddr = vma_address(vma, offset);
+ info->vaddr = offset_to_vaddr(vma, offset);
}
mutex_unlock(&mapping->i_mmap_mutex);
@@ -1042,7 +1037,7 @@ int uprobe_mmap(struct vm_area_struct *vma)
list_for_each_entry_safe(uprobe, u, &tmp_list, pending_list) {
if (!ret) {
- loff_t vaddr = vma_address(vma, uprobe->offset);
+ unsigned long vaddr = offset_to_vaddr(vma, uprobe->offset);
ret = install_breakpoint(uprobe, vma->vm_mm, vma, vaddr);
/*
@@ -1103,7 +1098,7 @@ void uprobe_munmap(struct vm_area_struct *vma, unsigned long start, unsigned lon
build_probe_list(inode, vma, start, end, &tmp_list);
list_for_each_entry_safe(uprobe, u, &tmp_list, pending_list) {
- loff_t vaddr = vma_address(vma, uprobe->offset);
+ unsigned long vaddr = offset_to_vaddr(vma, uprobe->offset);
/*
* An unregister could have removed the probe before
* unmap. So check before we decrement the count.
--
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