[PATCH 09/17] mm/nommu: switch do_mmap_private to kernel_read

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Instead of playing with the address limit.  This also gains us
validation of the kvec and proper atime updates.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 mm/nommu.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/mm/nommu.c b/mm/nommu.c
index fc184f597d59..e907a25ec9bd 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1164,17 +1164,12 @@ static int do_mmap_private(struct vm_area_struct *vma,
 
 	if (vma->vm_file) {
 		/* read the contents of a file into the copy */
-		mm_segment_t old_fs;
 		loff_t fpos;
 
 		fpos = vma->vm_pgoff;
 		fpos <<= PAGE_SHIFT;
 
-		old_fs = get_fs();
-		set_fs(KERNEL_DS);
-		ret = __vfs_read(vma->vm_file, base, len, &fpos);
-		set_fs(old_fs);
-
+		ret = kernel_read(vma->vm_file, base, len, &fpos);
 		if (ret < 0)
 			goto error_free;
 
-- 
2.11.0




[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux