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ANDROID: sdcardfs: remove unnecessary call to do_munmap

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Adapted from wrapfs
commit 5be6de9ecf02 ("Wrapfs: use vm_munmap in ->mmap")
commit 2c9f6014a8bb ("Wrapfs: remove unnecessary call
to vm_unmap in ->mmap")

Code is unnecessary and causes deadlocks in newer kernels.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 35766959
Change-Id: Ia252d60c60799d7e28fc5f1f0f5b5ec2430a2379
This commit is contained in:
Daniel Rosenberg 2017-03-09 21:14:45 -08:00 committed by Amit Pundir
parent 9f6523661c
commit 8d253f8268
1 changed files with 0 additions and 6 deletions
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6
fs/sdcardfs/file.c
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@ -176,12 +176,6 @@ static int sdcardfs_mmap(struct file *file, struct vm_area_struct *vma)
goto out;
}
saved_vm_ops = vma->vm_ops; /* save: came from lower ->mmap */
err = do_munmap(current->mm, vma->vm_start,
vma->vm_end - vma->vm_start);
if (err) {
pr_err("sdcardfs: do_munmap failed %d\n", err);
goto out;
}
}
/*