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authorOleg Nesterov <oleg@tv-sign.ru>2008-02-05 06:27:18 (GMT)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-05 17:44:07 (GMT)
commit8a459e44ad837018ea5c34a9efe8eb4ad27ded26 (patch)
treeb2c479cc980c9793677302574005b97e05732d74 /mm/fremap.c
parentc0b49b0d164c4902e53c17d90e2c5e5a2ac9e132 (diff)
sys_remap_file_pages: fix ->vm_file accounting
Fix ->vm_file accounting, mmap_region() may do do_munmap(). Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/fremap.c')
-rw-r--r--mm/fremap.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/fremap.c b/mm/fremap.c
index 14bd3bf..69a37c2 100644
--- a/mm/fremap.c
+++ b/mm/fremap.c
@@ -190,10 +190,13 @@ asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
*/
if (mapping_cap_account_dirty(mapping)) {
unsigned long addr;
+ struct file *file = vma->vm_file;
flags &= MAP_NONBLOCK;
- addr = mmap_region(vma->vm_file, start, size,
+ get_file(file);
+ addr = mmap_region(file, start, size,
flags, vma->vm_flags, pgoff, 1);
+ fput(file);
if (IS_ERR_VALUE(addr)) {
err = addr;
} else {

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