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ovl: update ctx->pos on impure dir iteration 

This fixes a regression with readdir of impure dir in overlayfs
that is shared to VM via 9p fs.

Reported-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
Fixes: 4edb83bb10 ("ovl: constant d_ino for non-merge dirs")
Cc: <stable@vger.kernel.org> #4.14
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Tested-by: Miguel Bernal Marin <miguel.bernal.marin@linux.intel.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Amir Goldstein 2017-11-29 07:35:21 +02:00 committed by Miklos Szeredi
parent 08d8f8a5b0
commit b02a16e641
1 changed files with 4 additions and 1 deletions
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5
fs/overlayfs/readdir.c
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@ -663,7 +663,10 @@ static int ovl_iterate_real(struct file *file, struct dir_context *ctx)
return PTR_ERR(rdt.cache);
}
return iterate_dir(od->realfile, &rdt.ctx);
err = iterate_dir(od->realfile, &rdt.ctx);
ctx->pos = rdt.ctx.pos;
return err;
}