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fuse: fix "direct_io" private mmap

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MAP_PRIVATE mmap could return stale data from the cache for
"direct_io" files.  Fix this by flushing the cache on mmap. 

Found with a slightly modified fsx-linux.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
This commit is contained in:
Miklos Szeredi 2009-04-09 17:37:53 +02:00
parent ce60a2f157
commit 3121bfe763
1 changed files with 2 additions and 0 deletions
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2
fs/fuse/file.c
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@ -1298,6 +1298,8 @@ static int fuse_direct_mmap(struct file *file, struct vm_area_struct *vma)
if (vma->vm_flags & VM_MAYSHARE) if (vma->vm_flags & VM_MAYSHARE)
return -ENODEV; return -ENODEV;
invalidate_inode_pages2(file->f_mapping);
return generic_file_mmap(file, vma); return generic_file_mmap(file, vma);
} }